HYDROLYSIS, FORMATION AND IONIZATION … L8L—1*H« DE85 010645 HYDROLYSIS, FORMATION AND...

MtfM* L8L—1*H«

DE85 010645

HYDROLYSIS, FORMATION AND IONIZATION CONSTANTS AT 25°. C. AND AT HIGH TEMPERATURE-HIGH IONIC STRENGTH*

L. Phillips, C. A. Phillips, J. Skeen Lawrence Berkeley Laboratory

University of California One Cyclotron Road

Berkeley, California 94720

February 1985

This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Division of Engineering and Geosciences of the U.S. Department of Energy under contract no. DE-AC03-76SF00098, e.nd by Division of Waste Management, Office of Nuclear Materials Safety and Safeguards, of the U.S. Nuclear Regulatory Commission, under contract no. 25-7865 with Sandia National Laboratories, Albuquerque.

n!3Ij: :::J:.;f|!T IS iJilUtfflEI!

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ABSTRACT

Thermochemical data for nuclear waste disposal are compiled. The resulting computerized database consists of critically evaluated data on Gibbs energy of formation, enthalpy of formation, entropy and heat capacity of selected substances for about 16 elements at 25 C and zero ionic strength. Elements covered are Am, As, Br, C, CI, F, I, Ho, Np, N, 0, P, Pu, Si, Sr, S and U. Values of these thermodynamic properties were used to calculate equilibrium quotients for hydrolysis, complexation and ionization reactions up to 3C0 C and 3 ionic strength, for selected chemical reactions.

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ACKNOWLEDGEMENT

Thanks are given to the following for their conments and review of data: Gregory Choppin; Lester Morss; Donald Palmer; Earl H. Wooley; J. J. Cruywagen; Joseph Halperin; Gerd Olofsson; Peter Trenaine; Loren Hepler; Vivian Parker; Leon Maya; F. L. Oetting; Robert Mesmer; Ingmar Grenthe.

CONTENTS Page

Abstract i Acknowledgement . ii Introduction 1 Thermochemical Data 4

Equilibrium Constants 4 Temperature Effects 4 Effect of Ionic Strength 5

Uncertainties of Recommended Values 7 Inconsistencies in Calculated Equilibria 9 Reliability of Tabulated Dat* 12 Symbols, Units and Conversion Factors 13 Literature Cited 15

Attachment I. Properties of Water Appendix I. Thermodynamic Data

Americium Arsenic Bromine Carbon Chlorine Fluorine Iodine Molybdenum Neptunium Nitrogen Oxygen Phosphorus Plutonium Silicon Strontium Sulfur Uranium

Appendix II. Equilibrium Values for Selected Chemical reactions

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INTRODUCTION

Thermochemical data are basic to computer codes and other calculations on solubility and speciation of radionuclides in site-specific waters. Ideally, values of thermodynamic properties for all likely aqueous substances are known, together with an uncertainty in each value. The resulting database then permits calculation of equilibrium quotients for important chemical reactions such as hydrolysis and complexation, to high temperatures and in saline natural waters.

This report compiles critically evaluated thermochemical data fur calcinations applicable to the disposal of nuclear wastes. The objective is mainly to provide values of equilibrium quotients at temperatures and ionic strengths representative of natural waters associated with prospective waste repositories. For waters associated with sites such as basalt, tuff and granite, ionic strength is 0.01; saline waters for salt repositories are about 5 ionic strength . These natural waters include F", OH , HCO, , C 0 3 " , HS0 4" and SO^"" as principal anions. See Table 1. Thus, this compilation for use in calculating solubility and speciation of radionuclides in natural waters includes stability constants of metals such as Pu, Am and Np with these and other ligands. Besides metals, I, and C are important nonmetals, and are also included. Attachmentll lists proposed rules published in the Federal Register by the U.S. Environmental Protection Agency on nuclear waste disposal, as well as proposed criteria for radionuclides such as C and Cs. Management Plan for high-level wastes is given in Attachment III.

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In summary, a database for nuclear waste disposal consisting of critically evaluated thermochemical data is described. The database is developed around intrinsic equilibrium constants at 25 C and zero ionic strength; and mathematical equations which permit estimations of equilibrium quotients to 300 C and up to 3 ionic strength. Where available, the intrinsic data are compiled from other critical evaluations such as National Bureau of Standards and Lemire and Tremaine. Other important data have been calculated in this work. Besides equilibrium constants, values for the following thermochemical properties are compiled or are calculated: Gibbs energy of formation, enthalpy of formation, entropy and heat capacity for individual substances. From these basic data, we calculate the magnitudes of thermodynamics of reaction, for example enthalpy change, for hydrolysis and other reactions. These values are also tabulated.

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Table 1. Compositions of Ground Water In Potential Repositories (Reference 11, Table 14)

Concentration, mg/L Salt

Constituent A* B** Granitet Basalttt TuffTT

Lithium 20 0.05 Sodium 42,000 115, ,000 125 250 51 Potassium 30,000 15 0.4 " 1.9 4.9 Rubidium 20 1 Cesium 1 1 —-Magnesium 35,000 10 0.5 0.04 2.1 Calcium 600 900 59 1.3 14 Strontium 5 15 .__ 0.05 Iron 2 2 0.02 0.04 Silica 11 92 61 Fluoride 3.7 37 2.7 Chloride 190,000 175, ,000 283 148 7.5 Bromide 400 400 Iodide 10 10 Carbonate 3 25 Bicarbonate 700 10 13 21 120 Sulfate 3,500 3,500 19 108 22 Borate 10 Nitrate 5.6

pH 6.5 6.5 9.0 9 7 Eh (Volts) Mildly Mildly

Oxidizing Oxidizing +0.17 -0.50

Mildly Reducing

* Based on analysis of brine inclusions in the Salado formation near Los Medanos, Hew Mexico (see Reference 14).

** Based en solution results from water saturated with WIPP salt. t Based on results from Stripa mine in Sweden (see Reference 21).

pH value taken from Reference 12. tt Rased on data of Reference 12.

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THERMOCHEMICAL DATA

Data are given here in two formats: first as thermodynamic properties of individual substances to include values of Gibbs energy and enthalpy of formation, entropy and heat capacity in Appendix I. The second format consists of values of equilibrium quotients to 300 C, and ionic strength mainly up to 3 for selected chemical reactions in Appendix II. Tabulated also in Appendix II are values of A rH , AS , A C D calculated from data in Appendix I and Debye-Huckel parameters for the reactions selected.

Equilibrium Constants The database centers on values of equilibrium constants, log K , at

25 C and zero ionic strength. The chemical equilibria are mostly hydrolysis, complexation and ionization reactions. These intrinsic data are calculated from the equations

A rG° = A rH° - TAS° (1) -A G°

Values of A H 0 and AS 0 for each chemical reaction are calculated from r the sum of the A»n and S° of the products, minus this sum for the reactant„.

Temperature Effects Equilibrium quotients are computed from 25-300° C based on the

following equation

R In Q = AS 0 _ 4 r H ° + AC ° f 9 - 1 + In f T l l R In Q = AS 0 _

T + A C P [ T ' + 1 n VJ where 8 s 298.15° C

T = 273.15 + ° C

Q = equilibrium quotient

R = 8.3143 J mol ' 1 K"1

AS0 = entropy change at 25° C, J mol" K~

A / = enthalpy difference at 25° C, J mo!"

< = change in heat capacity at 25° C, J mol""' K"1

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Equation 3 assumes heat capacity change is constant over the temperature range of interest; this assumption is certainly not valid above perhaps 100 C for the majority of reactions. However, if chemical reactions are written such that both sides of a chemical equation have an equal number of like charges,

o (3 4 5) then constancy of AC is a more tenable assumption* ' ' '. This "balanced like charges" approach and eq 3 are used in this database to the extent possible. Lemire and Lemire and Tremaine assign C = 0 for uncharged aqueous substances such as U(0H).(aq). In absence of other data, this assumption is used for this database.

Effect of Ionic Strength Variations in log Q with ionic strength are calculated using an extended

Detye-Huckel equation.

A A Z 2 ! 1 ' 2

log Q = log K° + * TJ^ + bl (4) 1 + (69)VU

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K = intrinsic equilibrium constant at 25 C and 2£io ionic strength AY = Debye-Huckel slope, (kg m o l " 1 ) 1 ^ ; 0.510 at 25° C

2 hi = difference in sum of the squares of the charges of the products

of the reaction, and reactants I = ionic strength, mol kg" b = coefficient, kg mol" (B9) = 1, usually

Equation 4 is used over the range 0<I<3. Values of the parameters A.̂ 2

AZ , (B9) and b are found in reference 2 for many reactions. Otherwise these data were obtained from sources such as Baes and Mesmer , and

(71 Turner, Whitfield and Oickson' '.

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UNCERTAINTIES Cf RECOMMENDED VALUES

Gtnerally, uncertainties given here for thermodynamic properties are those given in the referenced publications for 25 C, and zero ionic strength. Data from the National Bureau of Standards have values "tabulated in g;./ieral so that the overall uncertainty lies between fl and 80 units of the

(9) last (rightmost) digit...." . An excellent paper on uncertainties was published by IUPAC Commission 1.2 of the International Union of Pure and Applied Chemistry, in the Journal of Chemical Thermodynamics' '.

Uncertainties in the recommended values are given in Appendix I as the number immediately below this value. These are to be interpreted as a ".+" range about the recommended value. Data referenced as obtained from the National Bureau of Standards have an uncertainty described in thi above paragraph. Otherwise, an uncertainty is not assigned to the best value. A log K calculated from the thermodynamic data will most often have a maximum uncertainty of +0.1 unit of log K°.

An uncertainty is not given for log Q at high ionic strength. The reader (6) should refer to Baes and Mesmer for uncertainties in hydrolysis quotients

for metals, usually over the range 0<I<3. Reference 2 has values of uncertainties for many complexation reactions, such as formation of fluorides, sulfates and carbonates.

Uncertainties are not given for h!gh temperature data, partly due to the large uncertainty in values of C ; and, partly because of the lack of experimental data. The dependence of uncertainties in log Q for each equilibrium reaction is difficult to predict. However, for eq 3 we find that uncertainty in AS has a larger effect on log Q than A H for the

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complexation reaction Pu + S0 4 " « PuSO^ (Table 2 ) . As shown in Table 2, a change in AS 0 of +20 J mol" K causes a change of +1.0 units for log Q from 25-350 C. On the other hand, changing A rH° by +900 J mol" affects log Q by about +_0.1 unit over the same temperature interval. An uncertainty in AC ° of +100 J rnol" K" results in a nonlinear effect on log Q; the change varies from 0 to +1 log unit. See Figure 1. The nonlinearity is due to the nonlinear nature of the temperature dependence of AC p as shown in Figure 2. A lucid and useful discussion of uncertainties in values of log K for neptunium was published recently by , • (12) Lemire .

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INCONSISTENCIES IN CALCUATEO EQUILIBRIA

Equilibrium constants at 25° C and I « 0 should be identical when Iculated from eq 1 and eq 2, as well as from Glbbs energy data:

A rG° = ZA fG° < 5 )

Table 2. t f f K t of mtcwttlnty in oS° Md firH° on f«g Q for the reaction Pu 4 < + SO,2" - PuS04

too 0 <t oS° stwm {.) mol*1 K'1) T/C 132 152 172

25 5.79 6.83 7.88 50 5.93 6.97 8.02 75 6,15 7.19 8.23

100 6.41 7.45 8.49 150 7.05 8.09 9.14 200 7.77 B.82 9.86 250 B.53 9.5? 10.62 300 9.29 10.3>: 11.38 350 10.06 11.10 12.15

o « il.05 units of log Q

Effect of uncertainty in ArH°

tog 0 « orH° shown (J mol"*!

vc 6420 6320 7220

25 6.99 6.83 6.67 50 7.13 6.97 6.83 75 7.32 7.19 7.05

100 7.58 7.45 7.35 160 8.21 8.09 7.99 200 8.91 8.82 8.72 250 9.66 9.57 9.48 300 10.42 10.34 10.26 350 11.18 11.10 11.03

o • iD.l units of log 0

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i ? *d»c»228<ooo > lCro«3£8< > 4f>0»<!2S'*+»>

0 17S 351 T e m p e r a t u r e C

Figure 1. Effect of uncertainty In heat capacity change on equilibrium quotient for reaction:

Pu ,«+. SGV PuSO, 2+

Te i t tpere fure Figure 2. Variation 1n heat capacity function versus temperature.

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However, values of thermodynamic properties for individual substances were obtained from numerous sources such as other compilations and research publications. These are combined to give values of changes in thermodynamics of reactions, thereby Introducing possible inconsistencies in values of log K°. Any inconsistencies are removed as these tables are revised: the reader is urged to communicate inconsistent data found in this report to the authors for subsequent revision of the tables.

Certain substances in the database have equivalent aqueous forms with one or more H„0 as a link. For example, C0 ?(aq) + H ?0 - H2C0,(aq>; As0 2" + 2H 20 = As(0H) 4"; M°7° 24 + 4 H 2 ° Hg(MoO,), . For these substances, thermodynamics of reaction within the constraints of uncertainty in values for each property are zero:

A rG° = A rH° = A S 0 = AC p° = 0 A typical maximum difference from zero due to uncertainty for A G 0 and A ^ H 0 is about 5 kJ mol in this database.

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RELIABILITY OF TABULATED DATA

By reliability we mean the closeness with which values of equilibrium quotieits reproduce the most reliable experimental data. Such data are obtained from experimental measurements; either directly from published research results, or from other compilations and critical evaluations. It is not possible to compare all calculated equilibrium quotients at high temperatures and ionic strengths with experimental or other data. This is partly due to the lack of experimental data, and partly because of the enormous amount of time required. Thus the scope of the database ev.iudes detailed comparison of computed equilibrium values with other work.

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SYMBOLS, UNITS AND CONVERSION FACTORS

Gibbs energy of formation, 25 C, I « 0; kO mol Enthalpy of formation, 25° C, I * 0; kJ mol" 1

Entropy, 25° C, I * 0; J mo)" 1 K" 1

Heat capacity, 25° C; 0 mol" 1 K" 1

Gibbs energy of reaction, 25° C, I « 0; 0 mol" Enthalpy of reaction, 25° C, I -0; 0 mol Entropy change for reaction, 25° C, I = 0; J ":ol K Heat capacity change for reaction, 25° C, I = 0; J mol" K"1

joules; cal = calories kilojoules = 1000 joules ionic strenjth, mol kg" 273.15 + ° C, C = Celsius gram molecular weight equilibrium quotient, or product intrinsic equilibrium constant, 25° C, I = 0 gas constant: 8.3143 J mol" 1 K" 1; 1.987 cal mol" 1 K"1

gaseous form solid form amorphous form aqueous form liquid form

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SYMBOLS, UNITS AND CONVERSION FACTORS (cont.)

(1000) (molarity) molal =

(1000) (density) - (molarity) (molecular weight of salt)

(1000) (density) (molality) molarity =

1000 + (molecular weight of salt) (molality)

cal --• 4.184 J

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LITERATURE CITED

1. S.L. Phillips: "Tiiermochemical Data for Nuclear Waste Disposal", LBL-17886, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (May 1984).

2. S.L. Phillips: "Hydrolysis and Formation Constants at 25° C", LBL-14313, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (Hay 1982).

3. O.w. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, Department of Chemistry, San Diego State University, oan Diego, CA 92182 (May 1982).

4. S.L. Phillips; L.F. Silvester: Inorg. Chem. 1983, v. 22, 3848. 5. W.T. Lindsay: "Estimation of Concentration Quotients for Ionic Equilibria

in High Temperature Water: The Model Substance Approach", 41st Annual Meeting, International Water Conference, Pittsburgh, PA , Oct. 20-22, 1980.

6. C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, Oohn Wiley & So;.s, Inc., New York (1976).

7. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochim. Acta 1981, v. 45, 855.

8. C.F. Baes; R.E. Mesmer: Am. J. Sci. 1931, v. 281, 935. 9. D.D. Wagman; W.H. Evans; V.8. Parker; R.H. Schumm; I. Halow; S.M. Bailsy;

K.L. Churney; R.L. Nuttall: J. Phys. Chem. Ref. Data 1982, v. 11, Suppl. 2.

10. A Report of IUPAC Commission 1.2 on Thermodynamics. Assignment and Presentation of Uncertainties of the Numerical Results of Thermodynamic Measurements: J. Chem. Thermodynamics 1981, v. 13, 603.

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11. M.J. Plodinec; G.G. Wicks; N.E. Bibler: "An Assessment of Savannah River Borosilicate Glass in the Repository Environment", OP-1629, Savannah Rivar Laboratory, Aiken, SC 29808 (April 1982), p.32.

12. R.J. Lemire: "An Assessment of the Thermodynamic Behaviour of .Neptunium in Water and Model groundwaters from 25 to 150° C", AECL-7817, Atomic Energy of Canada, Ltd., Pinawa, Manitoba, Canada (March 1984).

13. R.J. l.emire; P.R. Tremaine: J. Chem. Eng. Data 1980, v. 25, 361. 14. W.L. Marshall; E.U. Franck: J. Phys. Chem. Ref. Data 1981, v. 10, 295. 15. G.C. Akerlof; H.I. Oshry: J. Am. Chem. Soc. 1950, v. 72, 2844.

ATTACHMENT I

Selected thermochemlcal properties of water as a function of temperature at zero Ionic strength; and of Ionic strength at 25°C.

Selected Properties of H-O(l)

TCC) P(bar) 1o9K°H Dielectric Density

0 __— -14.938 87.81 •__• 25 .032 -13.995 78.46 0.9971 50 .123 -13.275 69.91 0.9880 75 .386 -12.712 62.24 0.9747

100 1.013 -12.265 55.39 0.9583 150 4.753 -11.638 43.89 0.9170 200 15.538 -11.289 34.59 0.8647 250 39.73 -11.191 26.75 0.7992 300 85.81 -11.406 19.66 0.7125 325 —_. -11.71 16.19 0.6544 350 165.13 -12.30 12.61 0.5746 360 186.51 -13.33 11.22 0.5284 370 210.3 -14.85 9.74 0.4519 372.1 215.4 -15.27 9.37 0.4196 374.1 220.9 -15.74 9.07 0.3169

FIGURES

Figure 3. Variation in ionization product of water as a function of ionic strength at 25°C in NaC10 4 solutions. Experimental data are from Baes and Mesmer (Reference 6). Figure 4. Plot of ion product of water versus temperature at zero ionic strength based on data calculated from Marshall and Franck (Reference 14). Figure 5. Effect of temperature on dielectric constant of water at saturation vapor pressures, calculated from Akerlof and Oshry (Reference 15). Figure 6. Effect of temperature on formation of U0,F 2(dq).

A. U 0 2+ + + 2F" = U0 2F 2(aq)

B. U 0 2+ + + 2HF(aq) = l)02F2(aq) + 2H +

Note almost linear plot obtained for eqB, where charges equal 2+ on both sides of the chemical equation.

H20 • OH- + H+

. I d 5 - I — I — H — I — I — I — I — t - H — 1 — 1 — 1 — I I I I I 6 2.5 5

Ionic St r*n»th Figure 3. Variation in ion product of H,0 as a function of ionic strength at 25°C.

• 1 1

- 1 3 . 5 ••

• I f

H 1 1 (—I 1 1 1 1 1 1 1 1 1 ' > 2 9 3 °C

Figure 4. Plot of ion product of hLO versus temperature at zero ionic strength.

100 c » •

c 0 u 50

«* H — I — < — K - H — I — < — I — I -200

T t i F t r t i u r i

i i i—I—(—t 4'3@

Figure 5. Effect of temperature on dielectric constant of water at saturation vapor pressure.

i 'i i — i — i — i — i — i — i — i - - H 1 1 1 1 3 . '

i e e e / T ( K > Figure 6. Effect of temperature on formation of U0 2F 2(aq). A. U 0 2

+ + + ZF" = U0 2F 2(aq).

UO 2 + 2HF(aq) = U0 2F 2(aq) 2ff

Linearity is improved by writing eq 3 in the following form, when plotting values of log Q as a function of 1000/T(K)

Vp° 298-15 B

log K'(T) + [ l n ( — — - ) • 1 ] - A + — - (5) 2.303 R T(K) T(K)

A — * — 2.303 R

1 -[ A„H° - 298.15 A.Cn° ] 2.303 R r r p

See Figure 7 and Figure 8. Because of the improved linearity, extrapolation can be made to higher temperature with more confidence with eq 5; this equation should be used whenever data are available on heat capacity of chemical reactions at 25°C.

Figure 7. Temperature function, F(log Q, A rC °) equal to ^ # 2M.lt

| Hr(T) • —£_[1»( ) t|] I.MI T(»)

versus 1000/T{K). From slope and intercept, A„H° • -31 ..6kJ/mol; A rS° •= -58.2 J/mol/K. r

Figure 8. Temperature function, F(log Q, 4 f C ' ) equal to *rV tM.11

1 * «*(T) • [ 1 » { — — ) • 1 J I.JOJ II T(K)

versus 1000/T(K). From slope and intercept, A„H° = -3.113 kd/mol; A rS° = 158 J/mol/K. r

Figure 9. Effect of ionic strength on first hydrolysis constant of A m + + + (data are ionic strength. Figure 10. Effect of change in ionic strength for formation constant of AmOH + + (data for NdOH + +).

Am (data are for Nd ). Note linear change for range 1 to 3 in

Figure 11. Ionic strength function versus ionic strength for hydrolysis of Am4"1"1" to form AmOH + +. Figure 12. Ionic strength function versus ionic strength for formation

J 0 2 * * *2HF«U02F2 • 2H + o

• 1 * - 6 . 5

- 8 1 . 5 -t~i—i i i—i i i i—i—I—<—i—i—i—»

2 . 5 3 , 5

1060 /T<K) Figure 7. Temperature function, F(log Q,A C °) versus 1000/T(K). From slope and intercept/ ArH°=-31.6kJ/mol; ArS°=-53.2 J/mol/K.

, U02+ + * 2 T - = U02F2

1 ,5 - I l l—KH—I—I—I I I I—•—•—I—I;

l eao T',t> Figure 8. Temperature function. F(log Q, A, C °) versus 1000/T(K). From slope and intercept, A.rH°=-3.113 kJ/mol; ArS°=153 J/mol/K.

fl** + + • H20*AnOH++ +H +

8 1.5 Ionic St r«n*th

Figure 9. Effect of ionic strength on first hydrolysis constant of Am+++ (data are for Nd+++). Note linear change for range 1 to 3 ionic strength.

5 . 2 5 ••

R m + + > + O H - = fliriOH + +

- H — I — I — I — I — I — I — I — ( — I — h 1 . 5 3

I c r i c S t r e n g t h Figure 10. E f fec t o f change in ion ic strength fo r formation constant o f AmOH++ (data f o r NdOH++).

Rewriting eq 4 as follows

log K°(I) - Try- • log K" + bl (6) 1 + (B9) V l £

gives eq 6 which predicts a linear relation when plotting the left hand side versus ionic strength (I). The intercept is the intrinsic equilibrium constant, log K°, and slope is the parameter, b. Equation 6 is plotted in Figure 11 and in Figure 12 for formation of AmOH + +, and for hydrolysis of Am . See also Reference 2, where eq 6 is used for other reactions, but with (89) = 1.6.

•e.5

-9 i i i i — i — i — i — i — i — i i i 1 .5 - i — i — i 3 Ionic Strength Figure 11. Ionic strength function versus

Ionic strength for hydrolysis of Am+++ to form AmOH++.

- { — l — ^ — ^ — i — i — i — i — I — I — i — i — I — i — t — i 1 . 5 3 Ionic Strength

Figure 12. Ionic strength function versus Ionic strength for formation of AmOH++.

APPENDIX I

Appendix is a tabulation of values for the following thermodynamic properties at 25°C and zero ionic strength:

Gibbs energy of formation,A fG° CYGo) Enthalpy of formation,AfH° (~fHo) Entropy, S° (So) Heat capacity, C ° (Cpo)

Immediately beneath each value is the uncertainty. Th^ form of the substance is given with the chemical formula:

(g) = gaseous (s) = solid (am) = amorphous (aq) = aqueous + or - refer to the number of charges

Examples:

H5I06(aq) is H gI0 6(aq) (U0Z)2(0H)2++ is (UO 2) 2(0H) z

References to the sources of the data are given for each element, iimiediately following the printout of the data.

************* * Aqueous * * Solutions * * Database * **••*•******«

AHNXCIOB Solids; Aquaous Spacies Ssptaabec 1984

PROPERTIES OF BLEBBHTAL ABESICIOB: Atoaic NUBbec: 95 Foraula Mass: 241.06 Electronic Configuration: S£7 7s2 Electronegativity: Hydration Nuabec: Ionic Radius: 0.975 angstrom Selected Average foe Soils: concentration in natural Haters:

THEBBODINANIC PROPERTIES OF SUBSTANCES: 25 C; 1=0

~£GO "fHo So Cpo Substance k.J ao 1-1 J a o l - 1 K-1 Ref .

AB(S) 0 .000 0 .000 5 4 . 4 7 2 . 7 0

25. 1 .

,86 ,3

An02(s) - 883 .660 - 932 .200 2 .5

9 5 . 6 0 2 , 5

A D 2 0 3 ( S ) - 1 6 0 5 . 9 0 0 2 0 . 0

- 1 6 9 2 . 0 0 0 15.0

127.00 17 ,22

As (OH) 4 (s) - 1 2 9 9 . 9 0 0 2 MB (OH) 3 (3) - 1 2 1 0 . 5 9 0

3 .0 14

AdF4 (s) - J 6 2 7 . 5 7 6 - 1 7 1 9 . 6 0 0 26 .0

148.50 4 . 0 0

AmF3(s) - 1 5 2 3 . 3 9 4 - 1 5 8 8 . 3 0 0 8 .0

127.60 4 . 0 0

AmC13 (s) - 910 .857 - 977.800 1.3

164.80 6 .30

5 , 2 1

flniBr3{s) - 786 .592 - 809.600 7.0

205 .00 16 .70

A»IJ(G) - 613 .793 - 612 .000 7 . 0

234 .30 20 .90

AraOCl (s) - 904. 162 - 953 .500 2 .5

102.50 7 .10

ABOBr (s) - 862 .741 - 898.000 7 .0

117 .10 16 .70

5 , 2 1

An2(C03)3(s) - 2 9 9 6 . 1 6 0 20 AB (OH) (CO3) (s) - 1 4 1 2 . 0 0 0 20 »«*»»* - 373 .200

10.0 - 432.200

11.0 - 4 0 6 . 0 0

21 .00 1

A a * » * - 599 .100 3 .8

- 616 .700 3 .8

- 2 0 1 . 0 0 13.00

"tGo "tHo So Cpo Substance kJ aol-1 J 1 BOl-1 K-1 B«f.

AaOH»+ - 790.560 - 831.820 10.0

- «7. 10 10,11 Al(0H)2* - 976.865

10.0 10,11

A«(0H)3(aq) -1159.215 10.0

10,11 AlF*» - 911.246

2.1 -108. 40 7,20

ABF2 + -1204.843 2.2

10 AmF3(ay) -1504.860

2.4 10

AaCl<< + - 737.410 10 ABC12+ - 870.650 20 AaS04* -1367.200

Am(S04)2- -2119.400 2.4

10 AnHC03«- + -1217.550

1.4 a Au(HC03)2» -1826.410

AmC03t -1164.100 2.0

9 Aa(C03)2- -1734.700

AMERICIUH References June 1984

0. Fuger; F.L. Oetting: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 2. The Actinide Aqueous Ions'1,International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). D.G. Brook ins; "Eh-pH Diagrams for Elements of Interest at theu Oklo Natural Reactor at 25 C, 1 Bar Pressure and 200 C, 1 Bar Pressure, Univ. of New Mexico, Albuquerque, NM 87131 (19B0). L.R. Morss; J. Fuger: J. Inorg. Nucl. Chem. 1981, v.43* 2059. A.I. Moskvin: Radiokhimiya 1973, v. 15, 504. J. Fuger: "Thermodynamic Properties of the Actinides: Current Perspectives"; in, Actinides in Perspective, N.M. Edelstein (ed.), Psrgamon Press, New York (1982), p. 409. F. David; K. Samhoun; R. Guillaumont; N. Edelstein: J. Inorg. Nucl. Chem. 1978, v. 40, 69. G.R. Choppin; P.O. Unrein: "Thermodynamic Stuay of Actinide Fluoride Complexation"; in, Transplutonium Elements, W. Muller and R. Lindner (eds.); North-Holland, Amsterdam (1976), p. 97. G. Bidoglio: Radiochem. Radioanal. Letters 1982, v. 53, 45. R. Lundqvist: Acta Chem. Scand. 1982, v. A36, 741. S.L. Phillips: "Hydrolysis and Formation Constants at 25 C", LBL-14313, Lawrence Berkeley Lab., One Cyclotron Road, Berkeley, CA 947*0 (May 1982). C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). F.A. Cotton; 6. Wilkinson: Advanced Inorganic Chemistry, Fourth ed.; John Wiley & Sons, Inc., New York (1980). I.A. Lebedev; V. Ya. Frenkel; Yu. M. Kulyako; B.F. Myasoeaov: Radiokhimiya 1979, v. 21, 817. D. Rai; R.G. Strickert; D.A. Moore; J.L. Ryan: Radiochim. Acta 1983, v. 33, 201. M.S. Caceci; G.R. Choppin: Radiochin.. Acta 1983, v.33, 101. C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v.281, 935. L. R. Morss; D. C. Sonnenberger: Abstracts, IUPAC Conference on Chenrcal Thermodynamics, McMaster Univ., Hamilton, Ontario, Aug. 13-17, 1984; Abstr. #131.

18. S.L. Phillips; L.F. Silvester: High Temperatures - High Pressures 1984, v. 16, 81.

19. F.L.Oetting; M.H. Rano; R.O. Ackermann: "The Chemical Thermodynamies of Actinide Elements and Compounds. Part 1. The Actiniae Elements". International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (March 1976).

20. J.F. Kerrisk: "Americium Thermodynamic Data for the EQS/6 Database", LA-10040-MS, Los Alamos National Laboratory, Los Alamos, NM (July 1984). R.J.Silva; H. Nitsche: "Thermodynamic Properties of Chemical Species of Waste Radionuclides", NUREG/CP-0052, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (Hay 1984), p. 70.

21- J. Fuger; V.B. Parker; H.N. Hubbard; F.L. Oetting: -The Chemical Thermodynamics of Actinide Elements and Compounds. Part 8. The Actinide Hal ides',International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (Decsmber 1983).

22. S° by analogy with Pu ?0,(s).

************* * Aqueous * * Solutions * * Database * •**•******•••

1ISKIIC Solids; Aquaous Spacies S«pt*llMC 1984

PEOPEBTIES OF EtBHEHTAL AHSEHIC: Atonic Wuaber: 33 Fociula Bass: 74.9216 Blectcoaic configuration: 3s2 3p6 3d10 4s2 4p3 Electronegativity: 2.0 Hydration Nuaber: Ionic aadius: Covalent cadius = 1.21 angstroa Selected Average foe Soils: 5 ag/kg Concentration in Natural Raters:

IflEiHODYMAHIC PROPERTIES OF SUBSTANCES: 25 C; 1=0

-£Go "fHo So Cpo Substance kJ •ol-1 J aol- 1 K-1 Bef.

As(s) 0.000 0.000 35.69 0.42

24.64 2,8

KAS03(S) - 858.300 4.5

- 924.870

As205(s) - 782.300

- 858.300 4.5

- 924.870 105.40 116.52 2 As406(s) -1152.430 -1313.940 214.20 191.29 2 AS203(S) - 575.964 - 656.970 107.41 95.65 1 alpha-As4S4(s) - 131.500 - 138.100 247.70 188.10 8

6.8 6.7 2.50 beta-As4S4(s) - 129.800 - 134.600 254.00 188.10 8

6.8 6.7 2.50 As2S3(s) - 90.700 - 91.600 163.70 115.60 8

5.0 4.8 4.20 As205(aq) - 951.400 2 As02- - 349.980 - 429.030 40.60 -100.80 2 HAs02 (ag) - 402.660 - 456.500 125.90 2 AS04 - 648.410 - 838.140 -162.80 -489.10 2,3 HAS04— - 714.600 - 906.340 - 5.40 -284.10 2.3 H2AS04- - 753.170 - 909.560 117.00 - 54.80 2.3 H3As04(aq) - 766.000 - 902.500 184.00 211.70 2.3 AS (OH) 4- - 830.110 -1006.820 179.58 49.80 5.7 AS03 - 447.700

21.0 - 663.790 -186.60 -475.30 3

HAS03 — - 524.300 21.0

- 689.100 12.0

- 15.10 -277.80 3

H2AS03- - 593.330 1.3

- 720.990 1.3

110.90 - 50.20 3 H3As03(ag) - 646.010

1.3 - 748.520

1.3 195.20 204.60 3

"f l io "fHO SO Cpo S o b s t a n c e kJ « o l - 1 J » o l - 1 K-1 Hef .

CH3AsO(OH)2(agJ 5 (CH3) 2AS0 (OH) (aq) 5

ARSENIC References

August 1984

R.A. Robie; B.S. Hemingway; <).R. Fisher: "Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (100,000 Pascals) Pressure and at Higher Temperatures", Geological Survey Bulletin 1452, U.S. Government Printing Office, Washington, DC 20402 (1978'. D.D. Wagman; U.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.N. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Property-, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochim. Acta 1981, v. 45, 855. C.r. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). T.R. Holm; M.A. Anderson; D.G. Iverson; R.S. Stanforth: "Heterogeneous Interactions of Arsenic in Aquatic Systems", in, Chemical Modeling in Aqueous Systems, E.A. Jenne (ed.), ACS Cymp. Ser. 93, American Chemical Ciciety, Washington, DC (1979), p. }>'<.

C.F. Baes; R. E. Mesmer: Am. J. Sci. 1981, v. 281, 935. G.K. Johnson; G.N. Papatheodorou; C.E. Johnson: J. Chem. Thermodynamics 1980, v. 12, 545. F.J. Millero: Geochim. Cosmochim. Acta 1983, v. 47, 2121. R.H. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). J.W. Ball; O.K. Nordstrom; E.A. Jenne: "Additional and Revised Thermochemical Data and Computer Code for WATEQ2", WRI78-116, U.S. Geological Survey, Menlo Park, CA 94025, 2nd Printing (Sept. 1981). B.K. Kasenov; S.M. Isabaev; R.B. Shashchanova; K.M. Mamraeva: Russ. J. Phys. Chem. 1984, v. 58, 605.

»»»***»»*»*•* BBOailE * Aqueous * Solids; * Solutions * Agaaous Species * Database * Scpteaber 198* it***********

PROPERTIES OF ELEMENTAL BROMINE: Atonic Nuabec: 35 Foraula Mass: 79.9090 Electconic Coatiguratioa: 3s2 3p6 3d10 4s2 4p5 Electronegativity: 2.8 Hydration Number: Ionic Radius: 1.94 angstroa Selected Average for Soils: 5 ag/kg (ppaj Concentration in Natural Haters: < 1 ag/L ia driaking

Hater: brines 400 ag/L

THERilODKNAHIC PROPERTIES OF SUBSTANCES: 25 C; 1=0

Substance * fGo "fHo

kJ a o l - 1 So Cpo

J a o l - 1 K-1 Ref.

3 r - - 103.960 - 121.500 0 . 2

82 .84 - 1 4 1 . 8 0 1,8 0.20

****•***•••** CHLOaiMC * Agueous * Solids; * Solutions * igneous Species * Database * September 1984 *************

PfiOPEBTIBS OF ELEMENTAL CHL03INE: Atomic Number: 17 Formula Mass: 35.4530 Electronic Configuration: 2s2 2p6 3s2 3p5 Electronegativity: 3.0 Hydration Nuaber: Ionic Radius: 1.83 angstroa Selected Average for Soils: 100 ag/kg concentration in Natural Haters: 0.15 to 1000 ag/L. Brines 180,000 ag/L

THEfi.MODYNAHIC PSOPEBT1ES OF SUBSTANCES: 25 Cj 1=0

"fGo ~fao SO Cpo Substance It J nol-1 J aol-1 K-1 Bef. CI- - 131.228 - 167.080 56.73 -126.00 2,8,10

0.1 0.16

•»»•*•*»*•»*» FLDOUHE * Aqueous • Solids; * Solutions * agueoas Species * Database * September 1984

PBOPEETIES OF ELEMENTAL H.UOIIIS: Atoiic HuabeLM 9 Foraula Mass: 18.9984 Electronic Configuration; 1s2 2s2 2pS Electcoaegatirity: 3.95 hydration Number: Ionic Radius: 1.35 angstcoa Selected Average foe Soils: 200 ag/kg concentration in natural Haters: 2-37 ag/L in Basalt,

tuff, graaite Haters

THEUHOOYNAHIC PBOPEHIIES OF SUBSTANCES: 25 C; 1*0

"£Ro "fHo So Cpo Substance kJ aol-t J aol-1 K-1 Bef. F- - 281.750 - 335.350 - 13.18 -122.00 8,11

0.7 0.54 HF{g) - 273.200 - 273.300 173.67 29.13 1,8

0.7 0.0ft HF(ay) - 299.930 - 321.282 9«.98 39.30 11,12

0.5 0.7 0.50

BROMINE, CHLORINE, FLUORINE Referencts June 1984

D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schuntn; I. Nalow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The N8S Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data ".Translated by G.J. Solelmanl, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. O.K. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species In Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (Hay 19B2). J.W. Larson; K.G. Zeeb; L.G. Hepler: Can. J. Chem. 1982, v.60, 2141. P. Becker; B.A. Bllal: J. Solution Chem. 1983, v. 12, 573. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). A.J. Ellis: J. Chem. Soc. 1963, 4300. CODATA Task Group on Key Values for Thermoaynamics: CODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). G. T. Hefter: J. Solution Chem. 1982, v. 11, 45. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. J. Chem. 1983, v. 61, 2509. R.J. Lemire; P.R. Tremaine: J. Chem. Eng. Data 1980, v. 25, 361. G.T. Hefter: J. Solution Chem. 1984, v. i3, 457.

* agueoas • * Solatioas * * Database •

PROPERTIES OF ELUEBHL CalBOl: Atonic Ruaber: 6 Fornula Bass: 12.011 Electronic configurations 1s2 2s2 2p2 Electronegativity: 2.5 Hydration Ranker: 2 (BC03-) ; 15 (C03~) Ionic Radius: 0.77 angstroa covalenfc radios selected average for Soils: 20,000 ag/kg Conceatratioa in Eatural Batera: < 10 ag/l C02 (serface waters);

THEBBODIBtSIC PBOPEBTIES OF S0BST1RCBS: 25 C; 1-0

"fGO "fHo SO Cpo Substance kJ aol-1 3 aol-•1 K-1 Bef. C(s) 1.000 0.000 5.74

0.12 8.53 10,18

C02 (g) - 394.359 - 393.510 0.1

213.68 0.04

37.11 10,18 C02 (ag) - 385.980 - 413.800 117.60 243.00

10.0 7,10

C03— - 527.910 - 677.140 - 56.90 -302.00 4.0

- 53.00 4.0

318.00

10.32 BC03- - 586.770 - 691.990 91.20

-302.00 4.0

- 53.00 4.0

318.00 7,10

H2C03 (ag) - 623.080 - 699.650 187.40

-302.00 4.0

- 53.00 4.0

318.00 10 CaHC03* -1241.100 67.40 173.30 16 HgRC03* -1219.900 -1155.600 -110.00 160.80 16 CaC03 (ag) -1081.390 -1219.970 -110.00 10 Rgco3(ag) -1002.500 9

CaRBOB S o l i d s ; igaeoas Species Septeaber 198*

CARBON References April 1984

1. R.L. Berg; C.E. Vanderzee: J. Chen. Thermodynamics 1978, v. 10, 1113. 2. E. Wilhelm; R. Battino; R. Wilcock: Chem. Rev. 1977, v. 77 ; 219-3. C.S. Patterson; 6.H. Slocum; R.H. Busey; R.E. Mesmer: Geochim.

Cosmochim. Acta 1982, v. 46, 1653. 4. O.C. Peiper; K.S. Pitzer: J. Chem. Thermodynamics 1982, v. 14, 613. 5. J.W. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature

Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982).

6. R.N. Roy; J.J. Gibbons; M.D. Wood; R.W. Williams; O.C. Peiper; K.S. Pitzer: J. Chem. Thermodynamics 1983, v. 15, 37.

7. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. J. Chem. 1983, v. 61, 2509.

8. H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978).

9. G.B. Naumov; B.N. Ryzhenko; I.L. Khoaakovsky: "Handbook of Thermodynamic Data ".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NT1S.

10. D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2.

11. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ed., John Wiley & Sons, Inc., New York (1980).

12. M. Takahashi; Y. Kobayashi; H. Takeuchi: J. Chem. Eng. Data 1982, v. 27, 328.

13. A. Zawisza; B.V. Malesinska: J. Chem. Eng. Data 1981, v. 26, 388. 14. A. Yasunishi; F. Yoshida: J. Chem. Eng. Data 1979, v.24, 11. 15. A.J. Ellis; R.M. Golding: Am. J. Sci., 1963, v.261, 47. 16. S.L. Phillips; L.F. Silvester: Inorg. Chem. 1983, v. 22, 3848. 17. W. Gordy; W.J.O. Thomas: J. Chem. Phys. 1956, v. 24, 439.

!8. CODATA Task Group on Key Values for Thermodynamics: CODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

19. D.A. Palmer; R. Van E'ldik: Chem. Rev. 1983, v. 83, 631. 20. F.J. Mlllero; V. Thurmond: J. Solution Chem. 1983, v. 12, 401. 21. V. Thurmona; F.J. hillero: J. Solution Chem. 1982, v. 11, 447. 22. R.N. Roy; J.J. Gibbons; R. Williams; L. Godwin; G. Baker; J.H. Simonson;

K.S. Pitzer: J. Chem. Thermodynamics 1984, v. 16, 303. 23. R.A. Robinson; J.B. Macaskill: J. Solution Chem. 1979, v. 8, 35. 24. C.E. Vanderzee: J. Chem. Thermodynamics 1982, v. 14, 219. 25. S.H. Hyun; R.P. Danner: J. Chem. Eng. Data 1982, v. 27, 196. 26. G.K. Johnson; K.H. Gayer: J. Chem Thermodynamics 1980, v. U', 705. 27. W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New

York (1979). 28. J.P. Hershey; S. Sotolongo; F.J. Millero: J. Solution Chem. 1983, v. 12,

233. 29. Standard Methods for the Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. J. Cone; L.E.S. Smith; W.A. Van Hook: J. Chem. Thermodynamics 1979, v.

.11, 277. 31. F.O. Millero; D.H. Schreiber: Am. J. Sci. 1982, v- 2tf2, 1508. 32. J.W. Larson; K.G. Zeeb; L.G. Hepler: Can. 0. Chem, 1982, v. 60, 2141. 33. R.E. Mesmer: Private Communication, September 14, 1984.

*******v***** * Aqueous * * S o l u t i o n s * * D a t a b a s e * *************

IODISE S o l i d s ; A<g£S5»!a£ Sf WCi^S Mpteaber 1984

PBOPEHTIES OF ELEHEH1AL IODINE: Atoaic Nuaber: 53 Foraula Mass: 126.905 Electronic Configuration: 4s2 4p6 4d10 5s2 5p5 Electronegativity: 2.55 Hydration Nuaber: 2 Ionic Badius: 0.222 na (I-> Selected Average for Soils: 0.1 to *0 ag/kg Concentration in Natural Maters: 1.23 ig/L (1 " w a t e r ) ; 10 a g / L ( b r i n e )

THEBflODYNAHTC PBOPEBTIES OF SUBSTANCES: 25 C; 1 = 0

S u b s t a n c e

1 2 ( g )

HIO(g) CH31(g) 1 2 0 5 ( s )

HI03 (s )

Ba (103) 2 (s> . . g I 0 3 ( s ) B c < 5 ( I 0 6 ) 2 ( s | S r - j ( I 0 6 ) 2 ( s ) A g l ( s ) H g I 2 ( s ) ..2(s)

12 <ag) 1 0 4 -H 3 I 0 6 - -H 4 I 0 6 -

H5106 f i g )

1 0 3 -

H I 0 3 ( a g )

1 0 -HlO(aq)

"fGo ~fHo k j a o l - 1

1 9 . J 2 7

8 5 . 8 0 0 14.700 7.887

1 0 . 0

8 6 4 . 7 0 0 9 3.7'jQ

6 6 . 1 9 0 101.700

1 6 . 4 0 0 5 8 . 5 0 0

4 8 6 . 2 3 0 5 2 4 . 4 2 0

0.5 541.550

1.0 132.960

1.1 137.550

1.0 38.500 9 9 . 1 0 0

6 2 . 4 2 1 0 . 1

- 98.300 13.000

- 158.070

- 231.840 0.4

-1027.200 - 171.100 -3945.960 -3975.140 - 61.840 - 105.400

2 2 . 6 0 0 - 1 S U 5 0 0 - 7 5 6 . 0 0 0 - 7 5 9 . 4 0 0

4 . 6 - 7 5 9 . 4 0 0

- 224.680 2.2

• 217.030 1.0

• 107.500 • 138.100

So J a o l - 1

Cpo K-1 B e f .

260.57 0.06

187.40 254.12 115.00 30.00

249.40 149.40

115.50 180.00 116.14 0.80

137.20 222.00 95.30 212.00 16.70

268.90 118.40

36.90 10,18

44.10 129.00 50.0

187.40 102.92

56.82 54.44 330.00

74.00 40.00 159.40

1.30 5.40 90.00

95.40 133.90

31,38 10 10,47 48 10 10 49 49 10 10 10, 18 5,10 10 10, 11 10,51 10.11

8,10,47 5,10

"fco "fio so cpo Substaace kJ aol-1 J mol- 1 K-1

I 2 0 - - - 82.220 0.2

I20H- — 164.870 0.2

- 209.330 201.40 161.00

H2I0» — 107.790 1.1

S1.S70

- 193.940 - 62.80 358.00

I - -107.790

1.1 S1.S70 - 56.900 106.70 -142.30

0 .8 0.20 1 3 - — 51.400 - 51.900

1.9 239.30 166.70

8.0 Agl<ag> 25.520 50.380 184.10 -120.50 HgI2<ag) - 75.300 - 79.500 176.00

IODINE References Harch 1984

D.A. Palmer; M.H. Liettke: Radiochim. Acta 1982, v. 31, 37. Y.-T. Chia: "Chemistry of +1 Iodine in Alkaline Solution", UCRL-8311, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (June 1958). Y. Marcus: J. Solution Chem. T983, v. 12, 271. C.E. Vanderzee; M.E. Sprengel: J. Chem. Thermodynamics 1983, v. 15, 869. J.W. Cobble; R.C. Murray; P.O. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego Stav<> Univ., San Diego, CA 92182 (May 1982). G.K. Johnson: J. Chem. Thermodynamics 1977, v. 9, 835. Private communication, April 10, 1984. P.G. Desideri; L. Lepri; D. Heimler: "Iodine and Astatine", in Encyclopedia of Electrochemistry of the Element^, v. 1, A. 0. Bard (ea.). Marcel Dekker, Inc., New York (1972). H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data" Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 940Z5 (January 1974). P8-226 722, NTIS.

D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, John Wiley & Sons, Inc., New York (1980). CRC Handbook of Chemistry and Physics, R.C. Weast, Ed., CRC Press, Inc., Boca Raton, FL (1983). L.I. Katzin; E. Gebert: J. Am. Chem. Soc. 1955, v. 77, 5814. Encyclopedia of Chemical Technology, 3rd ed., v. 13, John Wiley & Sons, Inc., New York (1981). E.M. Woolley; J.O. Hill; W.K. Hannan; L. G. Hepler: J. Solution Chem. 1978, v. 7, 385. O.D. Bonner; P.R. Prichara: J. Solution Chem. 1979, v. 8, 113. Private communication, April 1984.

17, W. Gordy; W.J.O. Thomas: J. Chen. Phys. 1956, v. 24, 439. 1 B. CODATA Ttsk Group on Key Values for Thermodynamics: CODATA Recomnended

Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

19. J.F. Hinton; E.S. Amis: Chem. Rev. 1971, v. 71, 627. 20. M. Davies; E. Gwynne: J. Am. Chem. Soc. 1952, v. 74, 2748. 21. A.J. deEethune; T.S. Licht; N. Swendeman: J. Electrochem. Soc. 1959, v.

106, 616. 22. R.H. Stokes; L.A. Woolf; R. Hills: J. Phys. Chem. 1957, v.61, 1634. 23. K. fiakanishi; T. Ozasa: J. Phys. Chen. 1970, v. 74, 2956. 24. r.-H. Uu; M.M. Birky; L.G. Hepler: J. Phys. Chem. 1963, v. 67, 1202. 25. W.L. Lindsay: Chemical Equilibria in Soils, Oohn Wiley t> Sons, Inc., New

York (1979). 26. L.E. Trevorrow; 6.F. Vandegrift; V.M. Kolba; M.J. Steindler: ANL-83-57,

Part I, Argonne National Laboratory, Argonne, IL (August 1983). 27. M. Kahn; J. Kieinberg: Radiochemistry of Iodine, NAS-NS-3062, Los Alamos

National Laboratory, Los Alamos, NM (September 1977). 28. K. Andersson; B. Allard: SKBF-KBS-TR-83-07, Chalmers University of

Technology, Goteborg, Sweden (1983). 29. Standard Methods for the Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. M.J. Ploainec; G.G. Wicks; N.E. Bibler: DP-1629, Savannah River

Laboratory, Aiken, SC 29808 (April 1382), p.32. 31. C.-C. Lin: J. Inorg. Nucl. Chem. 1981, v. 43, 3229. 32. H. Richard; V. Karg; T. Schonfeld: 0. Radioanal. Nucl. Chem. 1984, v.

82, 81. 33. C.H. Li; C.F. White: J. Am. Chem. Soc. 1943, v. 65, 335.

34. F.J. Millero; O.R. Schreiber: Am J. Sci. 1982, v. 282, 1508. 35. T.L. Allen; R.M. Keefer: J. Am. Chem. Soc. 1955, v. 77, 2957. 36. R. Furuichi; I. Matsuzaki; R. Simic; H.A. Liebhafsky: Inorg. Chem. 1972,

v. 11, 952. 37. 0. Haitnovich; A. Treinin: J. Phys. Chem. 1967, v. 71, 1941. 38. C-C.Lin: J. Inorg. Nucl. Chem. 1980, v. 42, 1093.

39. R.A. Rankin; F.A. Hohorst; ft.A. Nielsen; E.E. F1lDy; W.A. -rasl: EMIC0-114V, Exxon Nuclear Idaho Co, Inc; Idaho Falls, ID 83«Ci (Sept 1983).

40. A. Roux; G.M. Husbally; G. Perron; J.E. Desnoyers; P.P. Singh; E.M. Wool ley; L.G. Hepler: Can. J. Chem. 1978, v. 56, 24.

41. V.B. Parker: Private Communication, April 18, 1984. 42. E.M. Wool ley; L.G. Hepler: Can. J. Chem. 1977, v. 55, 158. 43. R.L. Benoit; M.F. Wilson; S.-Y. Lam: Can. J. Chem. 1977, v. 55, 792. 44. R.P. Bell; E. Gelles: J. Chem. Soc. 1951, 2734. 45. L.G. Hepler: Private Communication, June 1984. 46. O.A. Palmer: Private Communication, July 1984. 47. This work S°(l205(s)) by analogy with AS2O5, Sb2us,

TagOs, P2O5 solids. 48. A. Finch; P.N. Gates; M.A. Jenkinson: J. Inorg. Nucl Chem. 1980, v. 42,

1506. 49. C.F.V. Mason; J.D. Farr; M.G. Bowman: J. Inorg. Nucl. Chem. 1980, v. 42,

799. 50. G.K. Johnson; P.N. Smith; E.H. Appelman; W.N. Hubbard: Inorg. Chem.

1970, v. 9 119. 51. R.M. Kren; H.W. Dodgen; C.J. Nyman: Inorg. Chem. 1968, v. 7, 446. 52. O.A. Palmer; R.W. Ramette; R.E. Mesmer: J. Solution Chem. 1984, v. 13,

673. 53. R.W. Ramette; D.A. Palmer: J. Solution Chem. 1984, v. 13, 637. 54. D.A. Palmer; R.W. Ramette; R.E. Mesmer: J. Solution Chem. 1984, v. 13,

685. 55. L.E. Topol: Inorg. Chem. 1968, v. 7, 451.

Equivalent Aqueous Substances of Molybdenum

Certain aqueous molybdenum substances are equivalent; differing only by one or more molecules of H.O 1n the formulas. Values of log Q are identical for reactions involving these equivalent substances. These include the following:

HMo0 3+ + 3H 20 = Mo(0H) 5(H 20) +

HMo. 0 6+ + 5H 20 = Mo 20(0H) g(H 20) +

2 H 2 M o 2 ° 6 + + + 5 H 2 ° = M o 2 ° ( 0 H ) 3 ( H 2 0 > 2 + +

H 3 M o 2 ° 6 + + + 5 H 2 ° = Mo 20{0H) 7(H 20) 3+' H"

HMo0 4' + 2H 20 = Mo0(0H) 5" HgMoO^aq) + 2H 20 = Mo(0H)6(aq) H3Mo04''' + 2H 20 = Mo(OH) 5(H 20) +

HMo 2C 7" + H 20 = H 3(Mo0 4) 2" M o7°24 + 4 H " ° = H 8 ( M o ( V 7 HHo 70 2 4 + ...20 = H g(Mo0 4) 7

H2 M o7°24 + 4 H 2 ° = " l o t " 0 0 ^ H3 M o7°24 + 4 H 2 ° = H 1 1 ( M o 0 4 ) 7

M o8°26* + 6 H 2 ° = H 1 2 ( H o 0 4 ) 8

HMo a0 2 8 + 4H 20 = H g(Ho0 4) 8

For each of these equivalent formulations, the values of changes in thermodynamic properties for the "reactions" shown is zero, within the uncertainties of the thermodynamic data.

************* * Aqueous '* * Solutions * * Database • *************

H01XBDENUD Solids; Aqueous Species September 1984

PROPERTIES OF ELEMENTAL HOLYBBSWUN: Atoaic Nuabec: 42 Focaula Bass: 95.9400 Electronic Configuration: Electronegativity: 2.1 Hydration Nuabec: Ionic Sadius: Selected Average foe Soils: 2 ag/kg (2 ppa) Concentcation in Natural Hatecs:

THEHHOaVNA.lIC PBOPEHIIES OF SUBSTANCES: 25 C; 1=0

"CGo "fao SO Cpo S u b s t a n c e kJ BOl-1 J a o l -•1 K-1 Ref .

Ho (s ) 0 . 0 0 0 0 . 0 0 0 2 8 . 6 6 2 4 . .06 4 .1003 (s ) - 6 6 7 . 9 7 0 - 7 4 5 . 0 9 0 7 7 . 7 4 7 4 . .98 4 a l p h a - H o 0 3 . H 2 0 ( s | - 1 0 3 7 . 8 0 0

0 . 9 12

I1O04— - 8 3 8 . 5 0 0 - 9 9 7 . 0 0 0 3 8 . 0 0 -3P<». .60 2 , 4 , 1 4 HHO04- - 8 6 2 . 4 7 5

6 . 0 - 9 7 8 . 9 3 5

1 . 8 1 8 1 . 0 0

9 . 0 0 5 , 1 4

H2Mo04(aq) - 8 9 0 . 8 4 6 6 . 0

- 1 0 0 7 . 5 0 0 1 7 8 . 3 5 4 , 1 4

U3MO04* - 8 8 3 . 1 8 0 0 . 9

- 1 0 0 1 . 5 0 0 2 . 4

1 7 3 . 3 0 8 . 0 0

5 , 1 7

Ho03 (aq) - 6 5 3 . 7 2 0 6 . 0

- 7 2 1 . 7 0 0 6 . 0

1 0 8 . 4 0 4

Hflo03* - 6 5 0 . 1 2 1 2 . 0

- 7 3 5 . 2 8 5 3 . 0

6 2 . 3 0 5 , 1 1

HMo206+ - 1 3 1 3 . 3 7 0 5 . 0

il2Ho?.Ob*t - 1 3 1 7 . 1 9 5 5 . 0

1 1 , 17

H3tio20&*** - 1 3 1 3 . 6 5 5 5 . 0

HHO207- - 8 1 9 . 0 2 0 3 Mo7024 - 5 2 0 8 . 3 5 0

8 . 0 - 6 0 2 9 . 1 2 5 3 0 1 . 0 0 2

HMO7024 - 5 2 5 0 . 3 0 4 6 . 0

- 6 0 3 5 . 0 0 0 8 . 0

4 2 2 . 0 0 3

H2Mo7024 - 5 2 8 3 . 7 0 0 7 . 0

- 6 0 4 4 . 5 4 5 5 0 1 . 0 0 3

H3B07024 - 5 3 0 7 . 0 5 0 7 . 0

- 6 0 5 5 . 4 3 0 5 4 3 . 0 0 3

~fGo "fHo SO Cpo Substaace kj aal-1 J iol-1 K-1 Be£. BO802S -5711.650 -6477.000 3,9,17

15.0 10.0 HS08026 -6527.7S5 8

10.0 H4Ho8026(sq) -6530.740 8

10.0 HHO8028 -6094.228 3

10.0 H3(flo04)2- -1767.540 3

10.0 H5(Ho04)2 + -1782.035 3

8.0 H8(Ho04)7 -6156.690 -7172.445 580.60 3,18

10.0 H9(Ho04)7 -6198.935 -7178.320 701.60 3,18

10.0 H10<HoO4)7-— -6231.475 -7187.865 780.60 3,18

10.0 H11(Ho04)7 -6256.530 -7198.750 822.60 3,18

10.0 H12(Ho04)8 -7132.880 -8191.980 3,18

10.0 H9(Ho04)8 -7042.745 3,18

10.0 Mo(OH)6{ag) -13S9.472 -1599.850 232.00 5,6

1.5 3.0 9.00 Mo(OH)5(H20(* -1364.304 -1592.775 272.00 5

2.0 4.0 10.00 MoO(0H)5- -1336.740 -1550.600 319.00 6

6.0 6.0 Mo20(OH)7(H20)3*++ -2495.300 11

5.0 Ho20(OH)8(H20)2*+ -2502.839 11

5.0 flo20 (OH) 9 (B20) • -2499.014 11

MOLYBDENUM References

June 1984

C.F. Baes; R.E. Hesmer: The Hydrolysis of Cations; John Wiley & Sons, Inc., New York (1976). I.Dellien; F.M. Hall; L.G. Hepler: Chem Rev. 1976, v. 76, 283. J.J. Cruywagen; Inorg. Chem. 1980, v. 19, 552. O.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumn; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. J.J. Cruywagen; J.6.B. Heyns; E.F.C.H. Rohwer: J. Inorg. Nucl. Chem. 1976, v. 38, 2033. J.J. Cruywagen; E.F.C.H. Rohwer: Inorg. Chem. 1975, v. 14, 3136. J. Aveston; £.U. Anacker; J.S. Johnson: Inorg. Chem. 1964, v. 3, 735. N. Kiba; T. Takeuchi: J. Inorg. Nucl. Chem. 1974, v. 36, 847. N.D. Jespersen: J. Inorg. Nucl. Chem. 1973, v. 35, 3873. N. Kiba; T. Takeuchi: J. Inorg. Nucl. Chem. 1975, v. 37, 159. J.J. Cruywagen; J.B.B. Heyns; E.F.C.H. Rohwer: J. Inorg. Nucl. Chem. 1978, v. 40, 53. 5. Crouch-Baker; P.G. Dickens: J. Chem Thermodynamics 1984, v. 16, 301. L.M. Khriplovich; I.E. Paukov: J. Chem. Thermodynamics 19C3. v. 15, 333. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data",Translated by G.J. Soleimani, U.S. Geoloaical Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Costnochim. Acta 1981, v. 45, 855. H. Inaba; K. Miyahara; K. Naito: J. Chem. Thermodynamics 1984, v. 16, 643. J.J. Cruywagen: Private Communication, September 25, 1984. Y. Sasaki; L.G. Sillen: Acta Chem. Scand 1964, v. 18, 1014. J.F. Ojo; R.S. Taylor; A.G. Sykes: J.C.S. Dalton 1975, 500.

* Agueous * * Solations * •Database •

RIPTBRIUR Solids; Agneoas Species Septeaber 198*

PBOPBBTISS OF ELEHEHTAL REPTOVIOH: Atoaic Ruaber: 93 roraula Hass: 237.05 Electronic Configuration: 5f5 7s2 Electronegativity: 1. 1 Hydration Ruaber: Ionic Radius: 1.012 angstroa (Rp»»»); 0.91 angstroa {Hp»t*+) Selected Average for Soils: Concentration in natural Raters:

TBEBHODrRAHIC PBOPBHTIES OF S0BS1AHCES: 25 C; 1=0

"fGO "fHO So Cpo Substance fcJ aol-1 J aol-1 K-1 Hef.

t!p (s) 0.000 0.000 50.62 1.00

29.62 0.6

Np205(s) -2013.000 -2148.250 163.00 123.00 22 14. 0 15.0 23.00

Hp02(s) -1021.800 -1074.000 80.30 66.21 12,13,2: 2.5 2.5 0.30

Hp03.H20(s) -1247.000 -1379.000 146.00 21 8.0 4.6 33.00

Hp02 (OBI 2 (S) -1236.000 -1377.010 118.00 112.00 22 12.0 12.0 20.00

Rp02(OH) (aa) -1128.000 -1224.580 101.00 86.00 22 5.5 6.0 8.00

Np{OH)4(s) -1447.000 -1621.365 139.00 131.00 22 20.0 20.0 25.00

RpF4 (S) -1783.630 -1874.000 13.0

152.72 4.10

116.06 12,19 HpP3 (s) -1460.310 -1528.830

5.0 124.68 4.00

98.32 12,19

KpC14(s) - 896.208 - 984.100 1.7

201.67 4.10

120.46 12,19

RpC13{s) - 831.699 - 898.500 2.5

161.50 8.40

104.39 12,19

BpBr4 (s) - 737.644 771.. 100 1.7

242.67 12.50

128.62 12,19

NpBCJ (s) - 706.031 - 730.500 2.1

196.65 17.00

109.24 12,19

Hp02(H03)2(s) -1209.000 21 HpO2(N03)2.H2O(s) -1527.000 21 Ilp02 (HO 3)2.6X20(8) -2429.200 -3009.100 516.30 21

5.4 5.0 4.60

"fGO *fHO So Cpo Substance kJ •Ol-I J aol- 1 IC-1 B«£. NpOC12(S) -1037.600

13.0 141.00 8.40

19 Ha MpO2C03.J. 5B20 (S) -2601.000

10.0 314.00 50.00

269.00 22 Hp(C204)2(s) -1975.000

21.0 21

Hp<HP04)2(s) -2858.000 14.0

200.00 20.00

224. 00 22 Ha2Kp207 (s) -2887.000

fl.2 13

Hp02* + - 795.800 - 860.600 - 92.90 10.00 1,12,22 5.4 4.6 8.00

Np02* - 915.000 - 978.200 - 20.90 92.00 1,12,22 5.4 4.6 3.00

Up**** - 502.900 - 556.100 -389.10 - 55.00 1,12,16 7.5 4.2 21.00

Hp*»* - 517.100 - 527.200 -179.1D - 60.00 1,12,22 3.3 2.1 6.40

HpO20H* -1003.530 -1102.990 24.00 64.00 3,22 5.0 6.0 60.00

(Np02)2 (Oil) 2 " -2029.380 -2247.240 - 14.00 - 32.00 3,22 10.0 10.0 50.00

(Np02)3(01i)5+ -3473.200 -3897.550 116.00 16.00 3,22 17.0 17.0 50.00

Hp020H(ag) -1101.610 5.0

25.00 60.00

0.00 J,22

NpOH*»* - 731.520 10.0

- 797.160 -197.00 50.00

- 18.00 3,16

Np(OH)2 + + - 961.000 -1050.400 - 44.00 - 15.00 22 15.0 15.0 80.00

Np(0H)3* -1181.000 -1313.V05 44.00 55.00 22 20.0 20.0 110.00

Hp(OH)4(aq) -1397.000 20.0

75.00 130.00

0.00 22 Hp{OH)5- -1607.000

40.0 96.00 170.00

- 67.00 22 Np02F* -1100.800 -1191.715 - 14.00 86.00 7,22

7.0 7.0 80.00 Hp02F2(aq) -1403.250 -1527.735 40.00 0.00 7,22

6.0 6.0 80.00 Np02F (aq) -1202.000 -1278.825 100.00 0.00 9,22

7.0 9.0 100.00 Np?»*+ - 624.220 - 888.270 -247.00 - 20.00 5,22

8.0 8.0 50.00 HpO2C0> - 925.310 -1015.180 0.00 432.00 8,22

5.0 5.0 150.00 Mp02C12 (aq) -1053.700 0.00 8 NpOjCl(ag) -1044.000

10.0 -1129.892

10.0 80.00 0.00 22

HpC]**» - 636.000 - 703.475 -260.00 273.00 22 9.0 9.0 150.00

Np02S04- -1658.950 -1866.892 70.00 -281.00 7,22 10.0 10.0 50.00

" too "£Ho So CpO Snbsttnce kJ l o l - l J uol-•1 K-1 a * f .

HpO2S04 («q> - 1 5 5 9 . 0 0 0 -1749 . .792 5 7 . 0 0 0 .00 17 ,22 6 . 0 6. .0 100.00

HpC12*» - 765.000 - 795. .795 fcO.,00 - 63 .00 22 9 . 0 10. .0 200 .00

»psoa*» - 1279 .000 -1444, .790 - 1 9 5 . 0 0 71 .00 7 ,22 10 .0 10. .0 50 .00

Np(S0«)2{aq) - 2 0 4 8 . 0 0 0 10 .0

- 27 .00 70 .00

0 .00 22

Np02HC03(ag) - 1 5 1 4 . 0 0 0 10.0

0 .00 10

»p02 (HC03) 2 - - 2 1 0 9 . 4 0 0 10.0

Mp02 (C03) 2 — - 1 9 3 3 . 0 0 0 -2184 . .050 170.00 - 3 8 2 . 0 0 22 11.0 14. .0 130.00

Np02(C03>3 -2494 .500 - 2 9 2 5 . .220 12 .00 134.00 11 ,22 10 .0 10. .0 50 .00

Sp02CO3- - 1 4 7 6 . 5 0 0 -1606 . .205 200 .00 - 20 .00 11,22 8 .0 8. .0 200.00

Hp02(C03J 2 - 2 0 1 1 . 2 0 0 - 2 3 0 0 . .100 110.00 149.00 11,22 8 . 0 9. .0 200.00

Np02(CO3)3 - 2 5 4 7 . 1 0 0 - 2 9 7 7 . .315 80 .00 438 .00 11.22 8 . 0 9. .0 50 .00

Np<C03)5 - 3 3 6 1 . 0 0 0 - 3 9 1 2 . ,310 160.00 771 .00 22 14 .0 15 . 0 200.00

SpO2HP04<ag) - 1 9 3 2 . 0 0 0 8 .0

10.00 200.00

0 .00 22

Bp02H2PO4» - 1 9 4 0 . 0 0 0 8 .0

- 50 .00 200.00

106.00 22

NpO2HP04- - 2 0 2 5 . 0 0 0 6 . 0

180.00 200.00

266.00 22

Np02H2P04{aq) - 2 0 4 9 . 0 0 0 6 . 0

20 .00 200.00

0 .00 22

NpH2P0«»* - 1661 .000 10.0

- 1 4 6 . 0 0 200.00

42 .00 22

Np(H2P04)2 + - 2 7 9 9 . 0 0 0 10.0

- 1 8 0 . 0 0 200.00

182.00 22

Np(H2P04)3(aq) - 3 9 4 1 . 0 0 0 20 .0

- 2 4 5 . 0 0 200.00

0 .00 22

HpHP04*» - 1 6 6 6 . 0 0 0 20 .0

- 1 5 0 . 0 0 200.00

4 5 . 0 0 22

Np(HP0U)2(ag) - 2 8 1 7 . 0 0 0 20 .0

- 1 2 0 . 0 0 200.0 .1

0 .00 22

Np(HP04)3~ -3962 .000 2 0 . 0

0 .00 200.00

- 2 2 8 . 0 0 22

Sp(HP04)4 -5107 .000 20 .0

80 .00 200.00

515.00 22

«p(HP04)5 - 6 2 4 6 . 0 0 0 20 .0

160.00 200.00

999.00 22

NEPTUNIUM References June 1984

J. Fuger; F.L. Oetting: "The Chemical Thermodynamics of Actlnlde Elements and Compounds. Part 2. The Actlnlde Aqueous Ions",International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). A.I. Hoskvin: Radiokhimiya 1973, v. 15, 504. C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). J. Halperin; J.H. Oliver: Radiochim. Acta 1983, v. 33, 29. G.R. Choppin; P.J. Unrein: "Thermodynamic Study of Actiniae Fluoride Complexation"; in, Transplutoniuip Elements, W. Huller and R. Lindner (eds.), North-Holland (1976). C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v. 281, 935. R.H. Smith; A.E. hartell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Precs, New York (1976). L. Bednarczyk; I. Fidelis: J. Radioanal. Chem. 1978, v. 45, 325. P.R. Vasuoeva Rao; N.M. Gudi; S.V. Bagawade; S.K. Patil: J. Inorg. Nucl. Chem. 1979, v. 41, 235. A.I. Hoskvin; A.N. Poznyakov: Russ. J. Inorg. Chem. 1979, v. 24, 1357. L. Maya: Inorg. Chem. 1983, v. 22, 2093. J. Fuger: "Thermodynamic Properties of the Actinides: Current Perspectives"; 1n, Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982), p. 409. L.R. Morss: "Complex Oxide Systems of the Actinides"; in, Actinides in Perspective, N.M. Edelstein (ed.), Pergaroon Press, New York (1982), p. 381. K.L. Nash; J.M. Cleveland: Radiochim. Acta 1983, v. 33, 105. F. Do,id; K. Samhoun; R. Guillaumont; N. Edelstein: J. Inorg. Nucl. Chem. 1S78, v. 40, 69. Obtained by averaging Cp° for Pu** and U , + (see Ref. 1, p. 32). S.L. Phillips: "Hydrolysis ano Formation Constants at 25° C", LBL-14313, Lawrence Berkeley Laboratory, One Cyclotron Roao, Berkeley, CA 94720 (May 1982).

IB. L. Maya: Inorg. Chem., In press (1984). 19. J. Fuger; V.B. Parker; W.N. Hubbard; F.L. Oetting: "The Chemical

Thermodynamics of Actinide Elements and Compounds. Part 8. The Actinide Hal ides", International Atomic Energy Agency, Wagramerstrasse, . P.O. Box 1OO.A-1400 Vienna, Austria (December 1983).

20. F.L. Oetting; H.H. Rand; R.J. Ackermann: "The Chemical Thermodynamics of Actiniae Elements and Compounds. Part 1. The Actinide Elements". International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (March 1976).

21. E.H.P. Cordfunke; P.A.G. O'Hare: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 3. Miscellaneous Actinide Compounds", International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (January 1978).

22. R.J. Lemire: "An Assessment of the Thermodynamic Behavior of Neptunium in Mater and Model Groundwater from 25 to 150° C", AECL-7817, Atomic Energy of Canada, Ltd., Pinawa, Manitoba, Canada (March 1984). 23. F. Schreiner; A.M. Friedman; R.R. Richards; J.C. Sullivan: "Microcalorimetric Measurement of Reaction Enthalpies in Solutions of Uranium and Neptunium Compounds", C0NF-840807-2, Argonne National Laboratory, Argonne, IL (August 1984).

• I F * * * * * * * * * * * mritoGEv * Aqueous * Gases; * So lu t ions * Aqueous Spec i e s * Database * Sapteebec 1984 * * * * * * » * * * * • •

PROPERTIES OF ELESEHTAL MITBOGBV: Atonic Nuibec: 7 Formula Mass: 14.0067 E lec tron ic Conf igurat ion: 1s2 2s2 2p3 E l e c t r o n e g a t i v i t y : 3 .0 Hydration Nuaber; i o n i c Bauius: 1.48 aagstcoa (NH4*) Se lected Average foe S o i l s : 1400 Eg/kg (1«00 ppa) Concentration in Natural Waters: 10-100 u g / t ; 5.6 ag/L {Tuff)

THERflODKNAilIC PBOPLRTIES OF SU3STANCES: 25 C; 1=0

"fGo ~fHo SO Cpo Substance kJ n o l - 1 J a o l - 1 K-1 Bef. NH3(g) - 16 .450 - 45 .940 192.67 35 .06 1,4

0.4 0 .08 NH3 'ag) - 26.500 - 80.290 111.30 86 .40 1 , 3 , 6

4 . 0 NH40H{agj - 263.650 - 366 .121 181.20 134.00 1 NH4* - 79.310 - 133.260 111.17 79 .90 1,2

0.3 0 .75 NH2C0O- - 378 .899 - 510.520 61 .10 - 80 .00 3

NITROGEN References June 1984

O.D. Wagman; U.H. Evans; V.B. Parker; R.H. Schuitm; I. Halow; S.M. Bailey; tC.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Oata 1982, v. 11, Suppl No. 2. J.M. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Oata for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (Kay 1982). This work. CODATA Task Group on Key Values for Thermodynamics: CODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). L. Haar; J.S. Gallagher: J. Phys. Chem..Ref. Oata 1978, v. 7, 635. G.C. Allred; E.M. Wool ley: J. Chem. Thermodynamics 1981, v. 13, 155. A.J. Read: J. Solution Chem. 1982, v. 11, 649. G. Maurer: "On the Solubility of Volatile Weak Electrolytes in Aqueous Solutions", in, Thermodynamics of Aqueous Systems with Industrial Applications, S.A. Newman, ed., ACS Symp. Ser. 133, American Chemical Society, Washington, DC (1980), p. 139.

S.L. Phillips: "Thermodynamic Properties of Aqueous Weak Volatile Electrolytes to High Temperatures", American Institute of Chemical Engineers, 1984 Annual Meeting, San Francisco, CA, November 25 - 30, 1984.

***»*»**••••* oziGm • Aqueous • Gases; • S o l u t i o n s * iqaaows Spacias • Database * Sspteaber 1981

PBOPEHTIES OF ELEMEMT1L OXYGEN: Atoa ic Nuaber: 8 Fornula ( lass : 15.9994 fu r 0 E l e c t r o n i c C o n f i g u r a t i o n : 1s2 2s2 2p4 E i e c t c o n e g a t i v i t y : 3 .5 ilyilcation Nunbec: 6 .1 foe OH-Xonic Kadius : S e l e c t e d Avecage for s o i l s : 490,000 ag/kg C o n c e n t r a t i o n in Na tu ra l Mate r s ;

THERMODYNAMIC PROPERTIES OF SUBSTAHCESJ 25 C; 1=0

Subs tance

02 (y)

02<a<D

H20(g) HiO(l) Oil-

"fGo -fHo So Cpo kJ •ol-l J aol- 1 K-1 Bef.

0.000 0.000 205.04 0.03

29.36 10, 18

16.400 - 12.000 0.1

110.90 205.00 2.0

5,10,37

228.572 - 241.818 188.83 33.58 10 237.129 - 285.830 69.91 75.29 10 157.244 - 230.025

0.0 - 10.71

0.20 -138.00 10, 18,31

OXYGEN References March 1984

C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). F.H. Sweeton; R.E. Mesmer; C.F. Baes: J. Solution Chem. 1974, v. 3, 191. G. Olofsson; I, Olofsson: J. Chem. Thermooynamies 1981, v. 13, 437. A.K. Covington; H.I.A. Ferra; R.A. Robinson: J.C.S. Faraday 1977, v. 74, 1721. J.W. Cobble; ft.C. Murray; P.O. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982). P.C. Criss; J.W. Cobble: J. Am. Chem. Soc. 1964, v. 86, 5390. M. Uematsu; E. U. Franck: J. Phys. Chem. Ref. Data 1980, v. 9, 1291. H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Oata".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025. (January 1974). PB-226 722, NTIS. 0.0. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth eo., John Wiley & Sons, Inc., New York (1980). R. Battino; T.R. Rettich; T. Tominaga: J. Phys. Chem. Ref. Data 1983, v. 12, 163. J. Anathaswamy; G. Atkinson: J. Chem. Eng. Data 1984, v. 29, 81. S.O. Gill; I. Wadso: 0. Chem. Thermodynamics 1982, v. 14, 905. I. Olofsson; S. Sunner: J. Chem. Thermodynamics 1979, v. 11, 605. S.L. Phillips: Anal. Chem. 1966, v. 3B, 1714. W. Gordy; W.J.O, Thomas: J. Chem. Phys. 1956, v. 24, 439.

CODATA Task Group on Key Values for Thermodynamics: CODATA Reconmended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

19. W.L. Marshall; E.U. Franck: J. Phys. Chem. Ref. Data 1981, v. 10, 29b. 20. C.P. Bezboruah; M.F.G.F.C. Ctmoes; A.K. Covington; J.V. Dobson; d.C.S.

Faraday I, 1973, v. 69, 949. 21. A.O. deBethune; T.S. Licht; N. Swendeman: J. Electrochem. Soc. 1959, v.

106, 616. 22. G. Olofsson; L.G. Hepler: J. Solution Chem. 1975, v, 4, 127. 23. P.P. Singh; E.M. Wool ley; K.G. McCurdy; L.G. Hepler: Can. J. Chem. 1976,

v. 54, 3315. 24. P.P. Singh; K.G. McCurdy; E.M. Woolley; L.G. Hepler: J. Solut'on Chem.

1977, v. 6, 327. 25. 0. Enea; P.P. Singh; E.M. Wool ley; K.G. McCurdy; L.G. Hepler: J. Chem.

Thermodynamics 1977, v. 9, 731. 26. G.C. Allred; E.M. Wool ley: 0. Chem. Thermodynamics 1981, v. 13.- 147. 27. W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New

York (1979). 28. D.J. Bradley; K.S. Pitzer: J. Phys. Chem. 1979, v. 83, 1599. 29. Standard Methods for the Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. H. Kienitz; K.N. Marsh: Pure Appl. Chem. 1981, v. 53, 1857. 31. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. J. Chem.

1983, v. 61, 2509. 32. B.B. Benson; 0. Krause; M.A. Peterson: J. Solution Chem. 1979, v. 8, 655. 33. S.L. Phillips: "Hydrolysis and Formation Constants at 25° C",

LBL-14313, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (May 1982).

34. F.J. Millero; D.R. Schreiber: Am. J. Sci. 1982, v. 282, 1508. 35. B. Riedl; C. Oolicoeur: 0. Phys. Chem. 1984, v. 88, 3348. 36. R.E. Mesmer: Private Communication, September 1984. 37. G. Olofsson; A.A. Oshod; E. Qvarnstrom; I. Wadso: J. Chem.

Thermodynamics 1984 ,. v. 16, 1041.

* Aqueous * * Solutions * * Database *

PHOSPHORUS Solids Aqueous September 1984

PBOPEBTIES OF ELEMENTAL PHOSPHOBB'J: Atoaic Nunber: IS Foraula Mass: 30.9738 Electronic Configuration: 3s2 3pJ Electronegativity: 2. 1 Hydration Nuaber: Ionic Badius: Selected Average for Soils: 600 ig/kg Concentration in Natural Waters:

THERHODYNANIC PBOPEBTIES OF SUBSTANCES: 25 C; 1=0

Substance

HP04--

H2P04-

H3P04 (ay)

"fGo "fHO kJ nol- 1

So Cpo J aol-1 K-1 fief.

0.000 0.000 41.09 0.25

23.84 2,3 1018.700 -1277.400 -220.30 -496.00 1.7

4.2 8.40 2C.0 1089.150 -1292.140 - 36.65 -254., 00 1,3,5

2.1 1.30 4.0 1130.280 -1296.290 90.37 - 34.00 1,3.7

2.1 1.30 4.0 1142.540 -1288.340 161.10 94.00 .,4,6

2.1 4.20 4.0

PHOSPHORUS References

September 1984

1. J.W. Larson; K.G. Zeeb; L.G. Hepler: Can. J. Chem. 1982, v. 60, 2141. 2 CODATA Task Group on Key Values for Thermodynamics: CODATA Recommended

Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

3. D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S:M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, 0. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2.

4. J.W. Cobble; R.C. Murray; P.O. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982).

5. R.E. Mesmer; C.F. Baes: J. Solution Chem. 1974, v. 3, 307. 6. R.J. Lemire; P.R. Tremaine: 0. Chem. Eng. Data 1980, v. 25, 361. 7. G.B.uNaumov; B.N. Rjvienko; I.L. Khodakovsky: "Handbook of Thermoaynamic

Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS.

8. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochlm. Acta 198i, v. 45, 855.

PLUTOKOH Solids; igneous Species September 1984

PROPERTIES CF ELEMENTAL PLUTOHIOMs Atonic Nuaber: 9't Formula Mass: 239.05 Electronic Configuration: 5E6 7s2 Electronegativity: Hydration Nuiber: Ionic Radius: 1.00 angstroa (Pu3+) ; 0.90 angstron (Pu'u) selected Average foe Soils: Concentration in Natural Maters:

IHEBMODINAMIC PROPERTIES OF SUBSTANCES: 25 C; 1=0

~£Go "fHo So Cpo Substance kJ aol-1 J BOl- 1 K-1

Pu (s) 0.000 0.000 56.10

32.84 1,10 0.42 0.3

Pu02{s) - 998.000 -1056.192 66.13 66.25 2 0.8 0.8 0.25

Pu203(s) -1594.000 -1681.841 127.00 123.74 2 21.0 21.0 8.00

Pu02(OH)2 (s) -1211.000 -1363.213 104.00 112.00 2 8.0 8.0 13.00

Pu02 (QHJ (am) -1056.000 8.0

87-00 8.00

86.00 2 Pu(OH)4 (s) -1426.000 -1611.096 107.00 131.00 2

29.0 29.0 21-00 Pu (OH) 3 (s) -1162.000 -1301.745 92.00 105.00 2

7.0 7.0 8.00 PafU (s) -1684.000 -1741.405 147.30 116.25 2

33.0 33.0 0.40 PuF3(s) -1482.000 -1555.885 126.10 92.60 2

13.0 13.0 0.40 Pu02HPO4 (s) -1918.000

13.0 154.00

8.00 159.00 *>

Pu (HP04)2(s) -2818.000 8.0

187.00 17.00

224.00 2 Pu(S04)2 (s) -2012.504 -2238.440 184.10 11

41.8 41.8 2.00 Pu02+* - 756.900 - 822.200 - 88.00 11.00 1.2

7.1 6.7 8.00 Pu02* - 849.800 - 914.600 - 21.00 98.00 1,2 7.5 5.9 8.00 Patttt - 481.600 - 536.400 -389.00 - 63.00 1,2

3.3 3.3 21-00

"feo "£HO so cpo Substance kJ

- 578 .600

• O l - I J mol-•1 K-1 8« f -

Pu + t *

kJ - 578 .600 - 592 .000 - 1 8 4 - 0 0 - 6 1 . 0 0 1.2

3 .3 2 . 1 6 .00 Pu020H+ - 961.900 - 1 0 6 2 . 6 0 0 2 6 . 0 0 70 .00 2

8 .0 8 . 0 8 0 . 0 0 (Pu02)2<OH)2» + - 1 9 4 1 . 0 0 0 - 2 1 5 7 . 9 0 0 0 . 0 0 - 5 3 . 0 0 2

13 .0 13.0 8 0 . 0 0 (PU02)3(0H)5* - 3 3 3 3 . 0 0 0 - 3 7 5 6 . 3 0 0 140 .00 2 .00 2

2 1 . 0 21 .0 8 0 . 0 0 Pu020H<aq) - 1 0 3 2 . 0 0 0 - 1 1 3 1 . 5 0 4 9 6 . 0 0 0 . 0 0 2

13 .0 12.0 200.00 PuOH+*+ - 715 .900 •• 774.000 - 1 6 7 . 0 0 - 6 9 . 0 0 2

20 .0 2 0 . 0 4 0 . 0 0 Pu(0H)2*» - 942.700 - 1 0 3 3 . 7 0 0 - 44 .00 - 1 6 . 0 0 2

2 0 . 0 2 0 . 0 8 0 . 0 0 Pu(OH) Jt - 1 1 6 3 . 0 0 0 - 1 2 9 7 . 3 0 0 4 4 . 0 0 5 9 . 0 0 2

2 0 . 0 2 0 . 0 110.00 Pu{OH)4(aq) - 1 3 7 6 . 0 0 0 - 1 5 7 0 . 6 0 0 7 5 . 0 0 238 .00 2 , 5

2 0 . 0 2 0 . 0 130.00 Pu{OH) 5- - 1 5 8 2 . 0 0 0 - 1 8 3 9 . 9 0 0 9 6 . 0 0 - 6 6 . 0 0 2

2 0 . 0 2 0 . 0 170.00 P(10H»* - 770 .300 - 824 .600 - 88 .00 9 .00 2

4 . 2 4 . 2 40 .00 PU02B* - 1 0 7 1 . 0 0 0 - 1 1 6 2 . 8 0 0 - 10 .00 91 .00 2

8 . 0 8 .0 8 0 . 0 0 Pu02F2<ag) - 1 3 8 3 - 0 0 0 - 1 5 3 4 . 6 0 0 - 44 .00 0 .00 2 ,10

8 .0 8 .0 80 .00 PU0 2F3- - 1 6 9 3 . 0 0 0 - 1 8 5 7 . 7 0 0 7 9 . 0 0 - 2 7 3 . 0 0 2

8 . 0 8 .0 80 .00 PU02F4— - 1 9 9 1 . 0 0 0 - 2 2 0 3 . 6 0 0 8 5 . 0 0 - 75 .00 2

8 .0 8 . 0 8 0 . 0 0 PuF*++ - 808 .800 - 866 .802 - 1 6 7 . 0 0 - 6 9 . 0 0 2

8 .0 8 .0 130.00 PU02C1+ - 887.000 - 978 .100 4 .00 436.00 2

8 . 0 8 .0 130.00 P u C l * * * - 618.000 - 686 .300 - 2 5 7 . 0 0 266.00 2

4 . 0 4 . 0 130.00 PUC2S04 (acj) - 1 5 2 0 . 0 0 0 - 1 7 1 1 . 6 0 0 61 .00 360.00 2

9 . 0 9 .0 100.00 PuS04»* - 1 2 5 9 . 0 0 0 - 1 4 3 3 . 5 0 0 - 2 1 8 . 0 0 88 .00 2

8 .0 8 . 0 30 .00 PUS04* - 1 3 4 3 . 0 0 0 - 1 4 8 7 . 2 0 0 - 5 0 . 0 0 113.00 2

5 .0 5 .0 30 .00 ?u02(C03)2— - 1 8 9 8 . 0 0 0 - 2 1 4 9 . 5 0 0 175.00 - 3 7 9 . 0 0 2

13.0 13.0 130.00 P U C 0 3 * * - 1 2 4 2 . 0 0 0 -140Q.500 - 2 i 3 . 0 0 134.00 2

21 .0 2 1 . 0 200.00

PLUTONIUM References June 1984

J. Fuger; F.L. Oetting: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 2. The Actinide Aqueous Ions .International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). R.J. Lemire: P.R. Tremaine: J. Chem. Eng. Data 1980, v. 25, 361. K.L. Nash; J.N. Cleveland: Radiochim. Acta 1983, v. 33, 105. C.F. Baes; R.E. Hesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v. 281, 935. A.S. Solovkin; V.N. Rubisov: Radibkhimiya 1983, v. 25, 625. U. Schedin: Acta Chem. Scand. 1975, v. A29, 333. J.C. Sullivan; M. Woods; P.A. Bertrand; G.R. Choppin: Radiochim. Acta 1982, v. 32, 45. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). This work. E.H.P. Cordfunke; P.A.G. O'Hare: "The Chemical Thermodynamics of Actiniae Elements and Compounds. Part 3. Miscellaneous Actinide Compounds", International Atomic Energy Agency, Karntner Ring 1 1 , P. 0. Box 590, A-1011 Vienna, Austria (January 1978).

* * * • •»»• • * * • • szucoa * lqaAoas * Solids; • S o l u t i o n s • aqanoaj Specie* • Database * September 198*

PBOPEBTIBS OF ELEBBBT1L SILICOB: Atonic Muaber: 14 Foraula Bass: 28.0855 Electronic Configuration: 3«2 3p2 Electronegati»ity: 1.8 Hydration Bulbar: Ionic Badius: 1.17 aagstroa covalent Selected Average for Soila: 320,000 ag/kg Concaotration in Natural Batars: 11-92 ag/L in tuff,

basalt, graaita waters

THEBHODIBAHIC PBOPEBTIRS OF S0BSXABCBS: 25 C; 1=0 .. .- . _

~fGo "fHo SO cpo substance kJ •ol-l J BOl-•1 K-1 Bef. Si02(guartz) - 856.281 - 910.700 41.46 44.51 8,9

1.0 1.0 0.20 5i02 (cristobalite) - 854.019 - 907.864 43.36 44.89 9 Si02(tridraite) - 853.812 - 907.488 43.93 44.60 3

2.4 2.4 0.42 Si02 (stishovite) - 802.827 - 861.318 27.78 42.97 3

22.1 2.1 0.42 Si02 (aaorphoos) - 849.233 - 901.554 48.48 44.06 9,11 Si02 (silica glass) - 850.559

2.1 - 903.200

2.1 47.40 37.94 3,11

Si02 (coesite) - 850.850 - 905.584 40.38 45.40 3 2.1 2.1 0.42

Si 02 (soil) - 851.438 11 H2Si03(ag) -1079.400 -1182.800 109.00 1 Si(0H)4(ag) -1308.000 -1460.000 180.00 215.00 2,3,10

1.7 1.7 4.20 SiO (OH) 3- -125J.900 -1434.400 77.84 51.10 5

1.7 1.7 4.00 11.0 Si02 (OH) 2 — -1176.820 -1396.620 - 12.90 -280.00 2,11 Siu3(OH) -1120.477 11 Si04 -1045.700 -1352.700 -402.00 2,11 Si406(OH|6— -4207,447 11 Si408 (OH) 4 -4081.. 820 12

SILICON References June 1984

1. 0.0. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: T;»e NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2.

2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data ".Translated by G. J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974), PB-226 722, NTIS.

3. R.A. Robie; B.S. Hemingway; J.R. Fisher: "Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (100,000 Pascals) Pressure and at Higher Temperatures"; Geological Survey Bulletin 1452; U.S. Government Printing Office; Washington, OC 20402 (1978).

4. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976).

5. R.H. Busey; R.E. Mesmer: Inorg. Chem. 1977, v. 16, 2444. 6. S.L. Phillips; L.F. Silvester: High Temperatures -High Pressures 198t,

v. 16, 81. 7. R.E. Mesmer: Private Communication, September 1984. 8. CODATA Task Group on Key Values for Thermoaynamies: CODATA Recommendea

Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

9. P. Richet; Y. Bottinga; L. Denielou; J.P. Petitet; C. Tequi: Geochim. Cosmochim. Acta 1982, v. 46, 2639.

10. B.A. Robinson: "Quartz Dissolution and Silica Deposition in Hot Dry Rock Geothermal Systems", LA-9404-T, Los Alamos National Laboratory, Los Alamos, NM 87545 (July 1982).

11- W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New York (1979).

*•••*•*••*»•* STlOBTIBII • Aqueous * Solids; • Solutions * Ag neons Spaciaa • Database * loveabec 1984

PBOPEBTIES OF ELEHENTAL STBOMHOH: Atonic Huaber: 38 Fornula Mass: 87.62 Electronic Configuration: 5s2 Electronegativity: 1.0 Hydration Nuubec: Ionic Radius: 1.27 angstron (Sr»+) Selected Average for Soils: 200 ig/kg Concentration in Natural ilaters: 5-15 ng/L in brines; 0.05 ng/L (Tuff)

THEHHODINAHIC PBOPEBIIES OF S0BSTAHCES: 25 C; 1*0

Substance "fGo

kJ "fHo

• o l - l So

J n o l - 1 Cpo

K-1 Ref.

a lpha-Sr (s) SrO(s) Sr (OH, 2 ( s ,

s rF2 (s ) a l p h a - S r C l 2 ( s )

0 .000 - 561.900 - 8 8 2 . . 7 5

- 1 1 6 4 . 8 0 0 - 781 .100

0.000 - 592.000 - 968.889

9 .2 - 1 2 1 6 . 3 0 0 - 833.700

1.0 - 1 4 5 3 . 1 0 0 - 1 2 2 0 . 1 0 0 - 1 6 3 3 . 9 0 0 - 2 3 0 4 . 5 0 0 - 550.700

1.0 - 770.770

52-30 54 .40 97 .07

8 .40 82 .13

114.85

2 6 . 4 0 45 .02 74 .90

70 .00 75 .60

1 1 11

1 1,15

SrS04{s) Srco3 (s) SrS i03 (s ) Sr2Si04(s) Sr»-»

sroH»

- 1 3 4 0 . 9 0 0 - 1 1 4 0 . 1 0 0 - 1 5 4 9 . 7 0 0 - 2 1 9 1 . 1 0 0 - 559 .480

- 721.300 0 .8

- 844.210 0 .8

0.000 - 592.000 - 968.889

9 .2 - 1 2 1 6 . 3 0 0 - 833.700

1.0 - 1 4 5 3 . 1 0 0 - 1 2 2 0 . 1 0 0 - 1 6 3 3 . 9 0 0 - 2 3 0 4 . 5 0 0 - 550.700

1.0 - 770.770

117.00 9 7 . 1 0 9 6 . 7 0

153.10 - 4 7 . 6 0

0 .90 - 9 . 9 0

81 .42 88.53

134.26 • 20 .90

1 1 1 1 1 ,10 ,15

- 1 3 4 0 . 9 0 0 - 1 1 4 0 . 1 0 0 - 1 5 4 9 . 7 0 0 - 2 1 9 1 . 1 0 0 - 559 .480

- 721.300 0 .8

- 844.210 0 .8

SrC12 (aq) - 821.910 - 884.800 1.0

- 1 2 1 5 . 5 6 0 1.0

- 1 9 2 8 . 0 0 0 - 1 4 4 9 . 9 7 0 - 1 2 0 8 . 0 5 0

8 0 . 3 0 1 ,15 ,17

SrHC03»

SC(HC03)2(aq) SrS04(aq) SrC03(aq)

-11S3 .390 1.0

- 1 3 1 5 . 9 9 0 - 1 1 0 9 . 6 7 0

- 884.800 1.0

- 1 2 1 5 . 5 6 0 1.0

- 1 9 2 8 . 0 0 0 - 1 4 4 9 . 9 7 0 - 1 2 0 8 . 0 5 0

158.50 5 .10

4 4 . 8 0 35 .50

1 10 10

STRONTIUM References June 1984

0.0. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.l. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. pf:ys. Chen. Ref. Oata 198?, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khooakovsky: "Handbook of Thermodynamic Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. R.A. Robie; B.S. Hemingway; J.R. Fisher: "Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar ( 100,000 Pascals) Pressure and at Higher Temperatures", Geological Survey Bulletin 1452, U.S. Government Printing Office, Washington, DC 20402 (1978). R.M. Smith; A.E. Martell: Critical Stability Constants. Vol.4: Inorganic Complexes, Plenum Press, New York (1976). W.L. Lindsay: Chemic.** Equilibria in Soils, John Wiley & Sons, Inc., New York (1979). F.J. rtiilero; D.R. Schreiber: Am. J. Sci. 1982, v. 282, 1508. R.M. lzatt; D. Estough; O.J. Christensen; C.H. Bartholomew: J. Chem. Soc. 1969, 47. C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v. 281, 935. L.R. Morss; C M . Williams: J. Chem. Thermodynamics 1983, v. 15, 279. This work. M.W. Chase; J.L. Curnutt; R.A. McDonald; A.N. Syverua: 0. Phys. Chem. Ref. Data 1978, v. 7, 793. M.W. Chase; J.L. Curnutt; H. Prophet; R.A. McDonald; A.N. Syverua: J. Phys. Chem. Ref. Data 1975, v. 4, 1. E.J. Reardon: Geochim. Cosmochim. Acta 1983, v. 47, 1917. J.W. Bixler; A.M. Bond: Inorg. Chem. 1978, v. 17, 3684. L.R. Morss; C W . Williams; I.K. Choi; R. Gens; J. Fuger: J. Chem. Thermodynamics 1983, v. 15, 1093. E. Busenberg; L.N. Plummer; V.B. Parker: Geochim. Cosmochim. Acta 1984, v. 48, 2021. A.S.Menaenkova; G.I. Alekseev; A.F. Vorob'ev: Russ. J. Phys. Chem. 198J, v. 57, 1323.

************* S0LFU8 * Aqueous * S o l i d s ; * s o l u t i o n s * Agu«ous Species * Database • Septeaber 1904

PBOPEHTIES OP ELBMESTAl. SULFOB: Atonic Nuaber: 16 Focaula Mass: 32.06 E lec tron ic Configurat ion: 3s2 3ptt E l e c t r o n e g a t i v i t y : 2.44 (6) Hydration Huaber: Ionic Radius: 1.90 angstcoa ( S — ) ; 2 .40 (S04—) Se lec ted Average toe S o i l s : 700 ag/fcg (ppa) (7) Coiicentcation i a Natural Hatecs: 19-108 ag/L S04— in

Tuff, Basalt, Granite waters

THERMODYNAMIC PROPERTIES OP SOBSIANCES: 25 C; 1=0

*fGo -fHo So Cpo Substance kJ a o l - 1 J a o l - 1 K-1 Bef. S(s)

H2S(g)

jl2S(a<j)

i iS-S— S02(g)

S02 taj)

3 0 J — .iSC.1-

rt2Sa3(a<j) S04 —

0.000 0.000 31.80 22.64 1 33.560 - 20.630 205.79 34.24

0.0 1,4 27.830 - 39.700 121.00 178.50

1.9 - 92-00

1-0 -400.40

1.« 12.080 - 17.600 62.80

178.50 1.9

- 92-00 1-0

-400.40 1,4

85.800 33.100 - 14.60

178.50 1.9

- 92-00 1-0

-400.40 1.2 300.194 - 296.810

0.2 248. 11 0.06

39.87 1,11 300.676 - 322.980 161.90 195.00

10.0 1.5 486.500 - 635.500 - 29.00 -268.20 1.2 527.730 - 626-220 139.70 - 10.00

4-0 1,5 537.810 - 608.810 232.20 293.00 1.2 744.530 - 909.600 18.83 -278.00 1.3,11

0.4 0.50 4.0 755.910 - 887.340 134.31

1.30 22.00 8.0

1,3.12

* * * * * * * * * * * * * ARSE1MC * Aqueous * ABSBMATES * Solutions * re ̂ 154 * Database • septeabar 198»

EQUILIBBIUN BEACTIOH: H3AsOtt<aq) • OH- = H2AS01- • H20

THEBMOCHEMICAL PHOPEBTIES: ~rHo, J aol-1 "So, J aol-1 K-1 "Cpo, J BO 1-1 K-1 Ay~z2, {kg ao l - l ) 1/2 b, kg ao l -1 l o g Ko

- 62865 13.62

- 53.21 0.00

EQUILIBRIUM QUOTIENTS: I-ionic strength, aol kg-1

log Q I/I 25 C 0.00 11.72 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 10.86

75 C 10.11

100 C 9.45

150 C 8.32

200 C 7.39

250 C 6.62

300 C 5.96

REFERENCES: COMMENTS:

************* • Aqueous * * Solutions * » Database » *************

oilman solid*; Aqueous Spec i e s Septuabar 1984

PftOl'EKTIES OF jaEMENTAL URANIUM: Atonic Number: 92 Foruula ( lass : 238.0290 foe U E l e c t c o o i c C o n f i g u r a t i o n : 5t'3 6s2 6p6 6d1 7s2 E l e c t r o n e g a t i v i t y : U*+*» = 1.4; U02+ + = 1.9 Hydrat ion Number: 002*«- = 7.35 I o n i c Pa i i ius : 1.025 angstroa (u> + *) 5 0 .93 angstcoa (0+»»») S e l e c t e d Average t o e s o i l s : c o n c e n t r a t i o n i n Natucai H a t e r s : 3 . 3 ug/L i n s ea water

TbEBMODXNA.UC PROPERTIES OF SUBSTANCES: 25 C; 1=0

- f G o ~£H0 So Cpo Substance JcJ BOl-1 J BOl-•1 K-1 Ref .

U(d) 0 .000 0.000 5 0 . 2 1 0 .13

2 7 . 6 7 0 . 0

10 ,51

U02(s) - 1 0 3 1 . 7 0 0 - 1 0 8 4 . 9 0 0 7 7 . (53 63 .60 10 ,18 1 . 0 1 .0 0 .20

alpha-11308 (s) - 3 3 6 9 . 7 0 0 - 3 5 7 4 . 8 0 0 282 .59 238 .36 10 ,18 3 . 0 2 . 5 0 .50

gamma-1103 (s) - 1 1 4 5 . 9 0 0 - 1 2 2 3 . 8 0 0 9 6 . 1 1 81.67 10,18 20 .0 2 . 0 0 .40

UO3.JH20(s) - 1 6 3 3 . 9 0 0 -18 27.200 176 .00 200.20 10 ,50 2 . 9 2 . 1 8.00

U409 (s) - 4 2 7 5 . 1 0 0 -4510. . 400 334 .13 293.34 10 t . f t a -U02(OH)2 (s ) - 1 3 9 4 . 0 0 0

4 . 0 - 1 5 3 4 . 7 0 0

4 .0 141.80 85 .79 4 , 9

U02{OH)2.U20(s) - 1 6 3 3 . 4 0 0 - 1 8 2 5 . 9 0 0 178.20 12 iIFO(s) - 2 0 6 8 . 5 0 0 - 2 1 9 7 . 0 0 0 227 .60 166.77 10 ,51

1 . 7 1.30 0 . 2 0F4 (S) - 1 8 2 3 . 3 0 0 - 1 9 1 4 . 2 0 0 151.67 116.02 10 ,51

4 . 1 0 .17 0 . 1 UF4 2. 51120 (s) - 2 4 0 0 . 0 0 0 - 5 2 6 2 . 4 9 0 289 .00 263.70 4

13.0 15.0 25 .00 UCJ.6 ( i , | - 962.000 - 1 0 9 2 . 0 0 0 285 .80 175.70 1 0 , 5 !

13.0 1.70 4 . 1 UOC12 \,r.) - 996.200 - 1066.900 138.32 95.06 10 ,51

2 . 5 0 .20 0 . 4 U02CC3(S) - 1 5 6 2 . 6 0 0

2 . 0 - 1691.200 138.10

8 .00 125.50 4 ,50

ljetrt-UCi/.S04 (s) - 1 6 8 5 . 9 1 5 - 1 8 4 5 . 1 0 0 163.17 144.90 5 0 2 . 5 0 . 8 8 .00

U (504)2 (S) - 2 0 6 4 . 9 0 0 - 2 3 0 9 . 6 0 0 180.00 50 14.6 12.6 21 .00

" f G o - f H o So Cpo S u b s t a n c e k J • o l - l J « O l -•1 K - 1 B e f .

(U02 ) 3 ( P 0 4 ) 2 ( s ) - 5 1 6 7 . 0 0 0 - 6 0 0 8 . 2 0 0 4 0 6 . 0 0 3 5 7 . 00 4 , 9 , 1 2 1 7 - 0 1 7 . 0 2 1 . 0 0

( U 0 2 ) 2 ( H P O U ) 2 ( s ) - 4 2 1 8 . 0 0 0 - 4 5 7 7 . 3 0 0 3 3 1 . 0 0 2 9 8 . 0 0 4 , 1 2 1 3 . 0 1 3 . 0 1 7 . 0 0

U ( H P 0 4 ) 2 . 4 t f 2 0 ( s ) - 3 8 1 1 . 0 0 0 3 . 0

- 4 3 0 5 . 3 0 0 3 . 0

3 5 6 . 0 0 1 7 . 0 0

4 6 0 . . 0 0 4 , 1 2

U S i 0 4 ( s ) - 1 8 9 1 . 2 0 0 - 1 9 9 9 . 9 0 0 1 1 7 . 1 0 12 (NH4) 2 ( 0 0 2 ) 2 ( P 0 4 ) 2 (S) - 4 3 9 7 . 4 0 0 - 4 8 9 9 . 5 0 0 4 3 9 . 3 0 12

N a 2 ( U 0 2 ) 2 ( P O 4 ) 2 ( s ) - 4 7 3 6 . 3 0 0 - 5 0 7 1 . 0 0 0 3 9 3 . 3 0 12 K 2 ( U 0 2 ) 2 ( P 0 4 ) 2 ( s ) - 4 7 8 2 . 3 0 0 - 5 1 2 1 . 2 0 0 4 0 5 . 8 0 12 M g ( U 0 2 ) 2 ( P 0 4 ) 2 ( s ) - 4 6 4 8 . 4 0 0 - 4 9 7 4 . 8 0 0 3 4 3 . 1 0 12 C a ( U 0 2 ) 2 { P 0 « ) 2 ( s ) - 4 7 4 8 . 8 0 0 - 5 0 7 5 . 2 0 0 3 5 1 . 5 0 12 S r ( U 0 2 ) 2 ( P O 4 ) 2 ( s ) - 4 7 5 7 . 2 0 0 - 5 0 8 3 . 6 0 0 3 6 4 . 0 0 12 B a ( U 0 2 ) 2 ( P 0 4 > 2 ( s ) - 4 7 5 7 . 2 0 0 - 5 0 8 7 . 7 0 0 3 6 8 . 2 0 12 F e ( t I 0 2 ) 2 ( P 0 4 ) 2 ( s ) - 4 2 7 6 . 0 0 0 - 4 5 9 8 . 2 0 0 3 5 5 . 6 0 12 Cu ( H 0 2 ) 2 ( P 0 4 ) 2 ( S ) - 4 1 3 3 . 8 0 0 - 4 4 6 0 . 1 0 0 3 5 5 . 6 0 12 P b ( I I 0 2 ) 2 ( P 0 4 | 2 ( s ) - 4 2 2 0 . 7 0 0 - 4 5 4 8 . 0 0 0 3 7 6 . 6 0 12 K 2 ( 0 O 2 ) 2 ( 7 0 4 ) 2 ( S ) - 4 5 8 9 . 8 0 0 - 4 9 1 2 . 0 0 0 4 3 9 . 3 0 12 C a ( D 0 2 ) 2 ( V 0 4 ) 2 ( s J - 4 5 6 0 . 6 0 0 - 4 8 7 0 . 1 0 0 3 8 4 . 9 0 12 a l p h a - N a 2 U 2 0 7 ( s ) - 3 0 0 2 . 4 0 0 - 3 1 9 4 . 7 0 0

1 .4 2 7 5 . 8 6

0 . 8 3 15

C s 2 U 2 0 7 ( s ) - 3 0 0 3 . 3 0 0 5 . 0

- 3 2 2 0 . 2 0 0 1 . 8

3 3 2 . 0 0 8 . 0 0

1 5 , 5 0

L i 2 U 0 4 ( s ) - 1 8 4 7 . 2 0 0 2 . 9

- 1 9 7 1 . 9 0 0 1 . 7

1 3 3 . 0 0 6 . 0 0

a l p h a - N a 2 0 O 4 ( s ) - 1 7 7 8 . 3 0 0 - 1 8 9 7 . 0 0 0 1 . 0

- 1 8 8 6 . 0 0 0 1 . 0

- 1 9 2 1 . 3 0 0

1 6 6 . 0 2 15

b e t a - H a 2 D 0 4 ( s )

- 1 8 9 7 . 0 0 0 1 . 0

- 1 8 8 6 . 0 0 0 1 . 0

- 1 9 2 1 . 3 0 0

K 2 U 0 4 ( S ) - 1 7 8 9 . 1 0 0

- 1 8 9 7 . 0 0 0 1 . 0

- 1 8 8 6 . 0 0 0 1 . 0

- 1 9 2 1 . 3 0 0 180 0 1 5 , 5 0 2 . 5 1 . 7 6 . 3 0

Cs2U04 (s ) - 1 8 0 3 . 8 0 1 4 . 2

- 1 9 2 6 . 3 1 4 4 . 2

2 1 9 . 6 6 0 . 4 6

1 5 2 . 76 5 0

l i 4 U 0 S ( s ) - 2 6 4 1 . 0 0 0 15 b e t a - S a 4 U 0 5 ( 3 ) - 2 4 5 1 . 0 0 0 15 M g U 3 0 1 0 ( s ) 3 3 8 . 5 0 15 C a 2 U 2 0 7 ( s ) - 3 3 3 5 . 0 0 0 15 SC2U3011 (s ) - 5 2 3 9 . 0 0 0 15 f igU04 (s ) - 1 7 4 9 . 2 1 3

1 . 3 - 1 8 5 6 . 9 0 0

1 . 3 1 3 1 . 9 0 1 2 8 . 10 1 5 , 5 0

CaU04 (a ) - 1 8 9 5 . 0 4 3 3 . 3

- 2 0 0 1 . 6 2 6 2 . 1

1 4 4 . 3 5 8 . 0 0

1 2 9 . 56 5 0

d l j i l i d - S i U O l (s ) - 1 9 8 7 . 0 0 0 15 t e t a - S r U 0 4 ( s ) - 1 9 8 8 . 0 0 0 15 <iaU0<4 (s) - 1 8 8 3 . 6 9 0

3 . 3 - 1 9 8 6 . 2 3 7

2 . 1 1 7 4 . 4 7

8 . 0 0 1 3 3 . 50 50

3 r 2 n o 5 ( s ) - 2 6 3 0 . 0 0 0 2 . 5

- 3 3 0 2 . 0 0 0 3 . 0

- 3 2 6 0 . 0 0 0 4 . 0

- 3 2 1 0 . 6 0 0

t d JUOb(s)

- 2 6 3 0 . 0 0 0 2 . 5

- 3 3 0 2 . 0 0 0 3 . 0

- 3 2 6 0 . 0 0 0 4 . 0

- 3 2 1 0 . 6 0 0

3 r J H 0 6 ( s )

- 2 6 3 0 . 0 0 0 2 . 5

- 3 3 0 2 . 0 0 0 3 . 0

- 3 2 6 0 . 0 0 0 4 . 0

- 3 2 1 0 . 6 0 0

D a 3 H 0 6 ( 5 )

- 2 6 3 0 . 0 0 0 2 . 5

- 3 3 0 2 . 0 0 0 3 . 0

- 3 2 6 0 . 0 0 0 4 . 0

- 3 2 1 0 . 6 0 0 15 4 . 1

* fGo "£Ho So Cpo Substance kJ • o l - l J • o l -•1 K-1 Bef . :

Ba2MgU06(s) - 3 2 * 5 . 3 0 0 4 . 8

Ba2Ca0O6(s) - 3 2 9 4 . 0 0 0 5 . 0

NiU308(s) 35B.000 - 3 9 4 2 . 0 0 0 15 L iU03(s) - 1 5 2 2 . 1 0 0

1.7 - 1 4 9 4 . 6 0 0

NaLI03(s) - 1 4 1 2 . 2 0 0

- 1 5 2 2 . 1 0 0 1.7

- 1 4 9 4 . 6 0 0 132.84 15 1.6 0 .13

KU03(s) - 1 5 2 2 . 9 0 0 1.6

- 1 5 2 0 . 9 0 0 1-7

- 2 0 2 2 . 1 2 7

8bU03 IS)

- 1 5 2 2 . 9 0 0 1.6

- 1 5 2 0 . 9 0 0 1-7

- 2 0 2 2 . 1 2 7

Na3U04(s) - 1 8 9 7 . 9 6 5

- 1 5 2 2 . 9 0 0 1.6

- 1 5 2 0 . 9 0 0 1-7

- 2 0 2 2 . 1 2 7 198.20 173.01 50 2 .5 2 .5 0 .42

CdU206(o) - 3 2 1 0 . 0 0 0 15 KU02P04.3H20(s) - 3 1 0 2 . 0 0 0

3 . 0 - 952 .700

- 3 1 0 2 . 0 0 0 3 . 0

- 952 .700 - 1 0 1 9 . 5 0 0 - 97 .10 5.00 3 ,4 2 . 1 1.7 3 .80

UOi + - 968 .600 - 1 0 3 2 . 6 0 0 - 25 .00 9 8 . 0 0 3 ,4 5 .4 5 .9 8 .0c

U»-*»* - 530.900 - 591.200 - 4 1 4 . 0 0 - 48 .00 3 , 4 2 . 1 2 . 1 21 .00

[}* + + - 480.700 - 489 .100 - 1 7 4 - 9 0 - 64 .00 3 ,4 4 . 6 3 . 8 6 . 4 0

U020H* - 1 1 5 7 . 0 0 0 - 1 2 5 9 . 0 4 0 16 .00 64 .00 4 . 1 2 3 .0 3-0 2 5 . 0 0

002 (OH) 2 (aq) - 1 3 5 9 . 0 0 0 5 . 0

- 1 5 1 5 . 0 0 0 59 .00 17.00

0 .00 4 , 1 2

(002)2 (Oil) 2** - 2 3 4 8 . 0 0 0 - 2 5 6 8 . 7 0 0 - 19 .00 - 42 .00 4 , 1 2 , 5 0 5 .0 5 .0 17 .00

(UO2)3(0fl)5» - 3 9 5 5 . 0 0 0 - 4 3 8 1 . 0 0 0 111.00 7.00 4 , 1 2 , 5 0 7 . 0 7 .0 17.00

(U02)3(01l )7- - 4 J 4 J . 0 0 0 20 .0

299.00 8 0 . 00

840.00 4

UOii + «* - 764.000 - 828.000 - 1 9 2 . 0 0 - 5 4 . 0 0 4 , 1 2 8 .0 8 .0 40 .00

U(Oit) 2** - 992.000 - 1 0 8 8 . 7 0 0 - 69 .00 - 1.00 4 , 1 2 20 .0 2 0 . 0 40 .00

U(0H)3* - 1 2 1 4 . 0 0 0 - 1 3 5 3 . 9 0 0 19.00 74.00 4 , 1 2 2 0 . 0 20 .0 40 .00

U(OH)t(a< ;i) - 1 4 3 0 . 0 0 0 - 1 6 3 0 . 9 0 0 50 .00 0 .00 4 20 .0 20 .0 40 .00

U (011)5- - 1 6 4 2 . 0 0 0 - 1 9 0 4 . 9 0 0 71 .00 - 1 6 9 . 0 0 4 ,12 8 .0 8 .0 40 .00

UQ2F«- - 1 2 6 4 . 0 0 0 - 1 3 5 7 . 3 0 0 - 19 .00 85 .00 •» 3 .0 3 .0 20 .00 UC2F2 (a<j) - 1567 .000 - 1 6 9 3 . 3 0 0 35 .00 0.00 4 ,12

3 .0 3 .0 20 .00 UG2FJ- - 1 8 6 8 . 0 0 0 - 2 0 2 8 . 4 0 0 69 .00 - 2 5 5 . 0 0 4 , 1 2

J.O 3.0 20 .00 UG2F4— - 2 1 5 1 . 0 0 0 - 2 3 6 4 - 7 0 0 76 .00 - 56 .00 4 , 1 2

3 .0 3 .0 20 .00

" f G o - f f l o So Cpo S u b s t a n c e

- 8 6 2 . 0 0 0

• o 1 - 1 a »oi-•1 K - 1 fief.

at*** - 8 6 2 . 0 0 0 - 9 0 7 . 0 1 0 - 1 9 2 . 0 0 - 5 4 . 0 0 4 , 1 2 8 . 0 8 . 0 8 0 . 0 0

U F 2 * » - 1 1 7 7 . 0 0 0 - 1 2 3 3 . 3 0 0 - 6 3 . 0 0 - 4 . 0 0 4 , 1 2 8 . 0 8 . 0 2 0 0 . 0 0

0 F 3 * - 1 4 8 5 . 0 0 0 - 1 5 6 7 . 3 0 0 1 3 . 0 0 7 8 . 0 0 4 , 1 2 1 3 . 0 1 3 . 0 2 0 0 . 0 0

U F 4 ( a q ) - 1 7 9 3 . 0 0 0 - 1 9 1 4 . 9 0 0 5 0 . 0 0 1 0 1 . 0 0 4 , 1 2 1 3 . 0 1 3 . 0 2 0 0 . 0 0

U F 5 - - 2 0 8 4 . 0 0 0 - 2 2 4 9 . 6 0 0 7 1 . 0 0 - 1 2 5 . 0 0 4 , 1 2 1 7 . 0 1 7 . 0 2 0 0 . 0 0

0 F 6 — - 2 3 7 9 . 0 0 0 - 2 5 8 9 . 5 0 0 8 4 . 0 0 1 4 . 0 0 4 , 1 2 1 7 . 0 1 7 . 0 2 0 0 . 0 0

U02C1+ - 1 0 9 1 . 0 0 0 3 . 0

- 1 1 8 6 . 5 0 0 - 6 . 0 0 8 0 . 0 0

4 2 7 . 0 0 4

UC1*» + - 6 7 7 . 0 0 0 - 7 5 1 . 0 0 0 - 2 8 3 . 0 0 2 8 % . 0 0 4 , 1 2 3 . 0 8 . 0 8 0 . 0 0

U 0 2 3 0 4 ( a q ) - 1 7 1 1 . 0 0 0 - 1 9 0 7 . 2 0 0 5 2 . 0 0 3 5 4 . 0 0 4 , 1 2 4 . 0 4 . 0 6 0 . 0 0

U 0 2 ( S O t ) 2 — - 2 4 6 6 . 0 0 0 - 2 8 1 2 . 5 0 0 1 0 6 . 3 0 12 U(SOU) 2 { a q ) - 2 0 7 6 . 0 0 0 - 2 3 7 8 . 6 0 0 -no.oo 1 5 8 . 0 0 4 , 1 2

1 7 . 0 1 7 . 0 5 0 . 0 0 U 0 2 C 0 3 ( a q ) - 1 5 3 3 . 0 0 0 - 1 7 0 8 . 4 0 0 0 . 0 0 4 9 6 . 0 0 4 , 5 0

3 . 0 3 . 0 6 0 . 0 0 U 0 2 ( C 0 3 ) 2 ~ - 2 1 0 6 . 0 0 0 - 2 3 5 9 . 3 0 0 1 6 6 . 0 0 - 3 8 7 . 0 0 4 , 1 2

2 . 0 2 . 0 8 0 . 0 0 UU2 ( C 0 3 ) 3 - 2 6 5 9 . 0 0 0 - 3 0 8 6 . 9 0 0 7 . 0 0 2 9 4 . 0 0 4 , 1 2

2 . 0 2 . 0 8 . 0 0 ( U 0 2 J 2 C 0 3 ( O H ) 3 - 4 1 0O2H?O4(ag) - 2 0 9 0 . 0 0 0 - 2 3 0 4 . 9 0 0 5 0 . 0 0 0 . 0 0 4 , 1 2

4 2 . 0 4 2 . 0 2 0 0 . 0 0 U02 ( H P 0 4 ) 2 — - 3 2 3 7 . 0 0 0 - 3 6 2 2 . 9 0 0 1 2 6 . 0 0 3 5 4 . 0 0 4 , 1 2

4 2 . 0 4 2 . 0 2 0 0 . 0 0 HJ2H2POH* - 2 1 0 0 . 0 0 0 - 2 3 1 1 . 7 0 0 6 3 . 0 0 3 6 . 0 0 4 , 1 2

3 . 0 3 . 0 2 0 0 . 0 0 DO. <H2P04)2 (acj) - 3 2 4 5 . 0 0 0 - 3 2 4 2 . 6 0 0 8 4 . 0 0 O.OO 4 , 1 2

4 . 0 4 . 0 2 0 0 . 0 0 U02 1H2POU) 3 - - 4 3 8 5 . 0 0 0 - 4 9 7 0 . 6 0 0 1 0 5 . 0 0 4 3 . 0 0 4 , 1 2

4 . 0 4 . 0 2 0 0 . 0 0 UHPf)4*» - 1 6 8 9 . 0 0 0 - 1 8 3 7 . 2 0 0 - 6 3 . 0 0 - 4 . 0 0 4 . 1 2

2 1 . 0 2 1 . 0 2 0 0 . 0 0 U (HP04J2 (a i j ) - 2 8 3 5 . 0 0 0 - 3 1 3 8 . 8 0 0 6 3 . 0 0 0 . 0 0 4 , 1 2

2 1 . 0 2 1 . 0 2 0 0 . 0 0 U(HP04) 3 — - 3 0 7 4 . 0 0 0 - 4 4 5 5 . 9 0 0 1 0 5 . 0 0 1 9 4 . 0 0 4 , 1 2

2 1 . 0 2 1 . 0 2 0 0 . 0 0 U(HP04) 4 - 5 1 0 y . . 0 0 0 - 5 8 1 1 . 6 0 0 2 1 - 0 0 3 0 2 . 0 0 4 , 1 2

2 1 . 0 2 1 . 0 2 0 0 . 0 0 U 0 2 S i O l O H ) 3 » - 2 2 4 6 . 8 0 0 12

URANIUM References April 1984

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APPENDIX II

Appendix II tabulates thermochemlcal data for selected chemical reactions, mainly for application to nuclear waste disposal. Data given are as follows:

Enthalpy change for reaction, AJCf^rHo) Entropy of reaction, A rS° ("So) Heat capacity of reaction.A _C_° ("Cpo)

" P o Debye-Huckel factor for the reaction, A AZ (Ay"z2) Intrinsic equilibrium constant, log K° (logKo) b> coefficient of bl term in Debye-Huckel equation (B9) coefficient of (1 + (B9) I 1 / Z ) term in Debye-Huckel

equation Q, equilibrium quotient, at value of I,T shown T, temperature, °C I, ionic strength

The elements are in alphabetical order; references are given at the end of each printout, for each element.

»*•**•*•*••** AUIIC7DI • Aqueous * aXMOIWSS • solut ioas • re - t i l • Database • S«pt«ab«c 19«»

EUUILIBKIOH REACTION: *•»»• • 020 * AaOH»» * H*

THEBHOCUEHICAL PROPERTIES: rHo, J aol-1 70710 SO, J BOl-1 K-1 i 83.99 Cpo, J aol-1 K-1 Ay"z2. (kg aol-1) 1/2 - 2.0« b. kg aol-1 -0.25 log Ko . - 8.00 B9 = 3.22

EUOILIBBIUN QUOTIBRTS: I=ionic streigth, aol kg-1

log Q I/T 25 C 0.00 - 8.00 0.01 - 8. 16 0.10 - 8. 34 0.20 - 8.42 O.iO - 8.57 1.00 - 8.73 2.00 - 9.02 3.00 - 9.29

50 C 75 C 100 C 150 C 200 C 250 C 300 C 7.04

BEFEBEHCES: 10;11;14; 15; 16 COHHEHTS:

EQUILIBRIUM REACTION: km*** * OH-

ASERICIUM HYDROXIDES r c » AM2 September 1984

A«OH++

TUEHMOCHEMICAL PROPERTIES: rlio, J «o l -1 : 14905 So, J mol-1 K-1 164.65 cpo, J nol-1 K-1 »y"z2, (kg nol-1) 1/2 . - 3.06 b, kg nol -1 0.38 log Ko 5.99

EQUILIBRIUM QUOTIENTS: i=io»ic strength, aol kg-1

log Q 1/T 25 C 50 C

0 .00 s . y 9 6 .23

0 . 0 1 5 .72

0. 10 5 .29

0 .20 5. 12

0 .50 4 . 9 1

1.00 4 .84

2 .00 4 .96

J .00 5.19

75 C 100 C 150 C 200 C 250 C 300 C

HE?EBENCES: 1;2;10 COMMENTS: Values are for KdOH»*f see Reference 11, p.191.

* ftgueous • * Solatioaa • * Databaaa *

1 H U C I B I HM0XXDS3 rc - »H16 tfovaaber 198*

fiQUILIBBIDH KE1CXI01I: * • • » • * 2H20 » aa(OB)2* * 2B>

THBESOCHESIC4L PBOPUTIfS:

~rHo, J »o 1-1 " S o , J « o l - 1 K-1 "Cpo. J a o l - 1 K-1

» y - z 2 , (kg 1 0 I - U 1/2 b, kg a o l - 1 log Ko -16.90

EQDH.IBIIDH QUOTIERIS: I ' i o n i c s t r e n g t h , ao l kg-1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 0.00 -16.90 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

RBFEBBNCES: 14 COMMENTS: Based on value for «<i(OH)2».

* » * * • * • * * * * * • AIBRICIUN • Aqu«OUS * aiDBOIIDCS • Solutions * ce * AH17 • Database * Voveabec 1981 *»*»*»**«*•*»

EQOILIBRIUH REACTION: AB**+ * 3H20 * Aa(OH)3(ag) • 3H»

THEHH0CHE1IICAI. PROPEBTIES:

~CHo, J BOl-1 "SO, J l o l - l K-1 "Cpo, J BO 1-1 K-1

Ay~z2, (kg a o l - 1 | 1/2 b, kg a o l - 1 l o g Ko -26.50

EQUILIBRIUM QUOTIENTS: I=ionic stceogtb, aol kg-1

log Q I / I 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 - 2 6 . 5 0

SKFERENCES: IH

COMMENTS: B a s e d 00 lid (OH) 3 ( s q ) .

* kgaaoa* * * Solutions * * Database *

BQUILIBBIOB BBkCXXOB: «B**» • Hr<ag) » k«r»» t fl»

ABBBICIBM FLDOUUS re « 113 Saptaabar 198*

TBEBBOCHEMICAl PBOPBITIBS: "rBo, J ao l -1 "SO, J BOl-1 K-1 "Cpo, J »Ol- l K-1

Ay*z2, (kg a o l - l ) 1/2 b, leg a o l - 1 log Ko

• 2 . OK •use

EQOILIBBIUN QOOCIENTS: I-ionic strength, aol kg-1

log Q I / T 25 C

0 .00 2 . 1U

0 . 0 1 1.94

0 . 1 0 1.49

0 .20 1.20

0 .50 0.52

1.00 - 0.44

2 .00 - 2 .18

3 .00 - 3 .83

SO C 75 C 100 C 150 C 200 C 250 C 300 C

0.40 - 0.30 0.20 0.20 0.70 1.30 1.80

BEPEBEHCES: 7;10 COMNENTS:

* Aguaous • * Solutions * * Database *

BQUILIBRIOB REACTION: km*** * I- • lut**

laiiicioa HDOSIDBS re - k&H Septeaber 1984

THERBOCHEBICAl PHOPMIIES:

"rHo, J ao l -1 "So, J ao l -1 K-1 ~Cpo, J a o l - 1 K-1

A y * z 2 , ( k g a o l - t ) 1/2 b, kg a o l - 1 log Ko

- 3 .06 - 1 . 2 6

EQOILIBBIUH QOOtlENIS: l * i o n i c s t r e n g t h , ao l t—1

I / T 25 C 50 C

0 .00 5 .29

0 .01 5 .00

0 .10 « . «3

0.20 4 .09

0 .50 3 .39

1.00 2 .50 2 .7

2 . 0 0 0.98

J. 00 - 0. «J

75 C 100 C 150 C 200 C 250 C 300 C

2.97 3 .25 3 . 88 4 .55 5 .23 5.90

REFEBENCBS: 10

COMMENTS:

• Aqueous * • Solutions * • Database *

llUICIOB r lMUMS re - 115 Septaaaar 1994

SQUILIBBIUB SUCTION-, km*** * 21- • km!2*

THIHaOCHENICAL PBOPEBTIES; ~rHo, J nol-1 ~So, J aol-1 K-1 "Cpo, J aol-1 K-1

fty~z2,<kg aol-1) 1/2 b, kg aoi-1 log Ko

5.10 7.40

EOUILIBBIUH QUOTIENTS: I^ionic straagth, aol kg-1

log Q I/T 25 C SO C 75 C 100 C 150 C 200 C 0.00 7.1*0 0.01 0.10 0.20 0. 50 G. 11 1.00 2.00 3.00

250 C 300 C

BEFEBENCES: 10 COHSENTS:

* Agaeoas * * S o l u t i o n s • * Database *

EQUJLIBIIUH BSACTIOM: km*** * 3F-

iHiiiciua FLBOIIDBS EC - 116 Septeabec 198*

A«T3(»g)

THEB110CHEIUCAI. P I O P B l t l E S :

~THO, J BOl-1 "SO. J a o l - J K-1 "Cpo, J B o l - 1 K-1

Ay"z2, {kg ao l -1 ) 1/2 b, kg an1-1 log Ko

• 6 .12

EttOILIBBIDfl QUOTIENTS: I - i o n i c s t r e n g t h , aol kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 10.60 0.01 0.10 0.20 0.50 9.00 1.00 2.00 .ao

BEfEBEHCES: 10

COMflBNTS:

* Aqueous • * Sointioas * * Oatabas* *

EQOII.IBBIU". BE»,CTIO»: * •»»• • CI - » aaCl**

MMiczaa CUOIZMS t e * 117 Mftaafecx 19 W

XaBBnOCHEBICU PBOPMTIIS:

"rHo, J a o l - 1 "So , 1 a o l - 1 IC-1 "Cpo, J »o l -1 R-1

» y - i 2 . <kg ao l -1 ) 1/2 s - 3 . 0 * i>, kg ao l -1 i 0.U3 log Ko : 1.24

EQOILXBBIUB QOOTIEIITS; I ' i o o i c s t r a a g t k , a o l kg-1

I/T 25 C 50 C 75 C 100 C ISO C 200 C 250 C 300 C

0 . 0 0 1-2<»

0 . 0 1 0 .97

0 .10 0 .55

0 . 2 0 0 .38

0 . 5 0 0 .19

1.00 0.1(1

2 .00 0 .31

3 .00 0 .59

BEFEB8NCES: 10

COflflEMTSl

* Aqueous * * So lu t ions * * D a t a b a s e •

EQUILIBBIOH HE ACTION: A»»*+ » S O * - - * » » S 0 4 *

ANEBICIOS SOtMTES r e * AB12 S « p t « « h e r 1984

TUEBflOCHEKICAL PBOPEBTIES:

"cHo, J l o l - 1 " S o , J BOl-1 K-1 " C p o , J BOl-1 K-1

A y " z 2 , (kg a o l - 1 ) 1 /2 b. kg a o l - 1 l o g Ko

- 6 . 1 2 0 . 4 3

4 . 2 0

BCUILIBBIUN QUOTIENTS: i = i o n i c s t r e n g t h , a a l k g - 1

l o g Q

I / T 25 C

0.00 4 .20

0 . 0 1

2 . 0 0

' . 0 0

50 C 75 C 100 C 150 C 200 C 250 C 300 C

8EFRRENCES: 10

COMMENTS:

* aqaaous * * Solutions * * Database *

EQUILIBRIUM BEACTIOI: »»••• • 2SOH-

aaiuciua SUIFAJIS CC » *B13

iafso«)2-

THERMOCHEHICiL FHOPEHXIES:

"rHo, J « o l - 1 " S o , J nol—1 K-1 "Cpo, J n o i - 1 K-1

» y " z 2 , (kg a o l - 1 ) 1 /2 : - 8 . 1 6 b , kg « o i - i : 1 . 2 6 l o g Ko : 5 . 4 8

EQUILIBBIUH QUOTIENTS; l = i o ^ i c s t c e a g t h , a o l k g - 1

l o g Q

I / T 25 C

0 .00 5.1»8

0 . 0 1 4 .75

0 .10 3 .65

0 .20 3 . 2 1

0 .50 2 .73

1.00 2 .66

2 . 0 0 3 .22

3.00 U. 09

50 C 75 C 100 C ISO C 200 C 2S0 C 3C0 C

REFEflENCES: 10

COIMENTSi

* Agaeous • * So lu t ions * * D a t a b a s e •

EQUILIBBUJH BEACTIOH: a a > » t • BC03- « laHC03»»

ASEKCIOH BICABBOBATBS r c = 1 0 8 S e p t e a b e r 1984

THEEH0CHEBICA1 PBOPEBTIES:

T H o , J a o l - 1 " S o , J a o l - 1 K-1 ~Cpo , J ao 1-1 K-1

A y " z 2 , (kg a o l - 1 ) 1 / 2 b , kg ao 1-1 l o g Ko

3 . 0 6

5 . 5 5

EQUIL1BEIUB QUOTIEBTS: I=ioaic strength, aol kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C

0.00 5.55

0. ?0 1*. 79

250 C 300 C

REFERENCES: 8;9;10

COMMENTS:

* Aqueous • * Solutions * * Database *

a i n i C I O H • I C U M M T M r c » km S « p t « a b « r 1 9 8 *

EI2UILXBBIUB BE1CII0*: * • • • • • 2HC03- - » n ( H C 0 3 ) 2 *

XHEBHOCBEaXCAL PBOPERTIZS:

"CHo, J « o l - 1 "SO. J » 0 l - l K-1 " c p o , J a o l - 1 K-1

A y " z 2 , < k g no 1 -1) 1 /2 s - 5 . 1 0 b , kg a o l - 1 l o g Ko : 9 . « 2

EQUILIBRIUM QUOTIENTS: l = i o n i c stC4B<Jth, BOL k g - 1

I / I 25 C SO C 75 C 100 C 150 C 2 0 0 C

0.00 9-<*2

0.20 8.15

250 C 300 C

REFERENCES: 8;9;10

COMMENTS:

A * * * * * * * * * * * * * Aqueous * * s o l u t i o n s • * D a t a b a s e » ************* EQUILI3HI0U BEACTIOII: km*** * C 0 3 — » AaCOJ*

aflECICIDH CABBOKlfES CC - AB10 saptaabac 198*

THERaocHSHICAL PfiOPEBZIES:

""rHo, J 1 0 1 - 1 ~SO, J » o l - 1 K-1 "Cpo. J « o l - 1 K-1

A y - z 2 , {kg a o l - 1 ) 1 /2 b, kg ao 1-1 l o g Ko

6 . 1 2

6 . 5 0

EQOTLIBBIOM QUOTIEHTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C

0.00 6.50

1.00 5.81

BEFEBEHCESI 9;10

COMMENTS:

* Aqueous * * So lut ions • * D a t a b a s e *

BQOIUBBION BEiCTIOB: ku*** * 2 C 0 3 -

lanicioa C a U O H T I S TC * M i l Saptaatwc 198*

l a ( C 0 3 ) 2 -

IHEBHOCUEBICKL PBOPEBTIES:

~CHo, J aol-1 "SO, J aol-1 K-1 "Cpo , J a o l - 1 K-1

4 y ~ z 2 , (kg BO 1-1} 1/2 : - 8 .16 b , kg a o l - 1 s - 0 . 2 1 log Ko : 1(1.01

EQDILIBBIUN QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

0 .00 14 .01

0 . 0 1 13.27

0 .10 12.03

0 .20 11.45

0 .50 10.53

1.00 9 . 7 2

2 . 0 0 8 .81

3 .00 8 . 2 1

50 C 75 C 100 C 150 C 230 C 2S0 C 390 C

BEFEBENCKS: 8 ; 9 ; 1 0

C01MENTS:

* * * • * * • * * • * * * AHEBICIOH * Aqueous * SOLIDS * Solutions • rc = »H1t * Database * Septeaber 1984

EQUILIBBIOH REACTION: Aa (OH) 3 (s) » 3fl* = A«*»» • 3B20

THEBMOCHEMICAL PBOPEBTIES: " c H o , J a o l - 1 "So, J n o l - 1 R—1 "Cpo , J ao 1-1 K-1

Ay*z2,(kg aol-1) 1/2 b, kg a o l - 1 l o g Ko 17.50

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l og Q

I / T 25 C

0.00 ' .7.50

0 . 0 1

" . 5 0

50 C 75 C 100 C 150 C 200 C 2S0 C 300 C

REFERENCES: 1«

COHHEHTS:

•••**••**•**• ABI1ICID0 * Aqueous • HtDlOIIPtS * Solutions • rc » AH15 * Database a S«pt*ab*c 1980

EQUILIBKIOH REACTION: A«(OH)3(s) = »«(0H)3(»g)

THEBHOCHEMCAL PBOPBBTIES: "rtio, J aol-1 "So, J aol-1 K-1 "Cpo. J aol-1 K-1 Ay~z2,(kg aol-1) 1/2 b, kg mol-1 log Ko 9.00

EQUILIBRIUM QUOTIENTS: I=ionic strength, aol kg-1

I/I 25 C 0.00 - 9.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C log Q

100 C 150 C 200 C 250 C 300 C

BHFEBENC£S: 14 COMMENTS: Dsed data fcoa Bef. 14 to calculate ~£Go (Aa(OB) 3{ag))

ABEBICIOH IOIS CC « AU30 Hovenbec 19S4

EQOILIBBIUH HEACTIOH: «i»(s) • 302 (aq) »12U* = «*•»»* • 6H20

THEBflOCBEHICAL PBOPEBTIES: ~CHO, J BOl-1 "SO, J BOl-1 K-1 ~Cpo, J » o l - 1 K-1

Ay*z2, (kg B0l-1) 1/2 b , kg i o l - 1 log Ko

EQUlLIBBlua QUOTIEHTS: I = i o n i c s t r e n g t h , ao l kg- t

log Q I/T 25 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BE?KBENCES: 1;19. COflHEHTS: iog Ko = 677.66 at 25 C aud 1=0

************* * Aqueous * * Solutions * * Database * *************

mucins OXIDES CC » AB31 loraabar 1984

EQHILIBRIUK REACT ION: 4*a02(s) « I2H* » <lla»»* * 02(9) • 6 H 2 °

THEBSGCHEKICAL PROPEBTIES: "cHo, J n o l - 1 " S o , J a o l - 1 K-1 "Cpo, J a o l - 1 K-1

Ay"z2 , (kg a o l - 1 ) 1/2 b , kg a o l - 1 l a g Ko 4 9 . 8 9

E Q O I L I B B I I I H QOOTIENTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g 8

I / T 25 C

0.. 10

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFSBENCES; 2 ; 5 .

COHHENTS:

* Aqueous * * Solutions • * Database *

AHERICIUN OXIDES CC * AH32 Bo»e»b«r 1984

EQUILIBHIUB BEICTIOU: UA«02(S) • 12H» » «Aa+»» » 02 (ag) • 6H20

THEBHOCHEMICAL PHOPEBTIES; "tHo, J ao l -1 "So, J no l -1 K-1 "Cpo, J ao l -1 K-1

Ay*z2, (kg aol -1) 1/2 fa, kg a o l - 1 log Ko (17.01

EQUILIBRIUM QUOTIENTS: I=ionic strength, iol kg-1

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 0.00 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

BEFEBENCES: 2; 5. COMMENTS:

* Aqueous • * Solutions * * Database * *************

AHEBICIBH OXIDtS re « Asia October 1984

EQUILIBRIUM BBACTIOM: Aa02js) » «H+ = la»»t» * 2H20

THEBHOCHEKICAI PIOPEITIBS: " r H o , J a o l - 1 " S o , J a o l - 1 K-1 " C p o , J a o l - 1 K-1

Ay"z2, <kg a o l - 1 ) 1/2 b , kg n o l - 1 l o g Ko

7 1 6 6 0

EQUILIBBIUS QUOTIENTS: I = i o n i c s t r e n g t h , i o l k g - 1

l o g Q

I / T 25 C 50 C 75 C 100 C 150 C 200 C

0 . 0 0 - 6-3U

0 . 0 1

0 . 10

250 C 300 C

fiEFEBENCES: 2 : 5 .

COHHENTS:

************* 4HKRICI0.1 * Aqueous • OXIDES • S o l u t i o n s * r e = 4flT9 • D a t a b a s e * J a n u a r y 1985 ************* EQUILIBRIUM REACTION: ft«203(s) • 6H* = 2k**** * 3H20

THERMOCIIEMICAL PROPEBTIES:

" c a o , 0 mo l -1 : - 3 9 8 8 9 0 " S o , J mo l -1 K-1 : - 3 1 9 . 3 0 ' C p o , J mo l -1 K-1

fty*z2,(kg m o l - 1 ) 1 / 2 b , ky n o l - 1 l o g Ko : 5 3 . 2 0

l o g Q

1/1 25 C

0 . 0 0 5 3 . 2 0

59 C 75 C 100 C 150 C i'00 C 250 C 300 C

REFERENCES: 1 ; 1 7 .

COMMENTS: "fSo[ An203 (s ) J changea t o - 1 6 0 5 . 9 0 0 k j a o l - 1 , 0 1 / 1 5 / 8 5 from - 1 4 1 5 . 5 0 0 f o r c o n s i s t e n c y w i t h ~ c f i = - c H - T ~ r S .

••*•***••*••« Aaiaxcimi * Agueoas * 3ID10XIDZS * Solutions * re « kS27 * Database * 3o»ea»«r 1984

EQUILIBRIUH BEACIIOH: Aa (OH)«(s) = ia»«*+ • «OB-

THEBaOCHEHICAL PBOPEBTISS: ' rHo, J aol-1 "So, J BOl-1 K-1 "Cpo, J aol-1 K-1 Ay~z2,(kg BO1-1) 1/2 b, kg «ol-1 log Ko -52.15

EQUILIBBIDM uaoTlEHIS: l = i o n i c s t r e n g t h , aol kg-1

I/T 25 C

0 . 10

1 . 0 0

2 . 0 0

3 . 0 0

50 C 75 C 100 C 150 C 200 C 200 C 300 C

REFERENCES: 2

C08HEUTS;

* Agueous » * Solutions * * Database •

EQUIilBBIHH BEACTIOM: aa(0H)3(S)

IHUXCIDB flIDlOZIDSS re - A«28 •oranbec 1984

» • • • • * 30H-

THEBSOCHEHIC*! PBOPEBTIES: "rHO, J aol-1 "So, J nol-1 K-1 "Cpo, J aol-l K-1 &y~22,(kg »ol-1) 1/2 b, kg aol-1 log Ko : -2*.HH

EQUlLIBBIua QUOTIEBTSi I=ionic strength, aol kg-J

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

BEFEBEHCES: 11t. COMMENTS:

• Iqueoas • • Solutions * • Database *

EQUItlBBIUH BEaCTIOI: ABFl(s)

AIIIXCXOI ruoum r e * M2« October 1»M

! • • * • • 3F-

THEBnOCBEKIClL PBOPEITIES: "zBo, J «ol-1 "SO, J »ol-1 K-1 "cpo, J aol-1 K-1 Ay~*2, (kg aol-1) 1/2 b, kg BO 1-1 log Ko

- 3«750 - 3 6 8 , 1 0

-13.85

EQUILIBRIUM QUOTIENTS: I - i o D i c s t r e n g t h , s o l kg-1

I / T 25 C

0.00 -13.85

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEBENCE3: 5.

COtlHENTS:

* Agueous * * Solutions o * Database *

EQOILIBBIDfl REACTIO!: AlC13(S) * As*** * 3C1-

IHEtlCIOfl CBLOBIBBS re * 1B2J October 198«

THEHHOCHEMICAL PROPERTIES:

*rHO, J BOl-1 S - 1 H 0 1 4 0 " S o , J a o l - 1 K-1 : - J 9 5 . 6 0 "Cpo, J ao 1-1 K-1

A y ~ z 2 . (kg B O I - 1 ) 1 /2 b , kg B O I - 1 l o g Ko J 1 4 . 3 S

EQUILIBRIUM QOOTIBMTS: I=ionic strength, aol kg-1

log Q I/T 25 C 50 C 0.00 14.35 0.01 0.10 0.20 0.50 1.00 2.00 3.00

75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 5. COMHENTS:

* Aqueous •• * Solutions • * Database *

EQUILIBHIUB HE1CII0R: AaBcJ(S)

unxcEoa BIOUDIS re - AK22 Octobac 19S«

* • • • » • 3Br-

THBBNOCHEHICAL PHOPEBIIES:

"rHo, J ao l -1 ~So, J aol—1 K-1 ~Cpo, J i o l - 1 K-J

Ay"z2, (kg nol-1) 1/2 b, kg » o l - 1 log Ko

-170200 - 1 5 7 . 5 0

E QUI LIBS I on QDOTIENIS: I = i o a i c s t r e n g t h , ao l Jtg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 21.79 0.01 0. 10 0.20 0.50 1.00 2.00 S..00

BEFEBENCES: 5. COMMENTS:

»***»**»***a* AHERICIUN * AgueoUS * C4RBOiliTES * S o l u t i o n s • r e * AH21 * Database * January 1985 ( ; £ * • • * * * * * * • «

fiQOILIBRIDH REACTION: Aa2(C03)3(S) » 2Al*»* • 3C03—

TBEHMOCHEHICAL PHOPEETIES: "rHo, J BO 1-1 "So, J aol-1 K-1 "Cpo, J mol-1 K-1 Ay*z2, (kg nol-1) 1/2 b, kg aol-1 log Ko : -37.58

EQUILIBRIUM QUOTIEHTS: I=ionic strength, nol kg-1

log Q I/T 25 C 0.00 -37.58 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEPEBEKCES: 20. COMMENTS: Focaula for An2 (C03) 3 (s) corrected; was Aa2(C03}(s).

* Agueous * * Solutions * * Database *

ABEEICIOH ClBB01U?kS r e » AH2C Qctaacr 1984

EumilBHXUM EEACTIOK: Aa (OH) (COJ) (S) • 2H» * km*** * HC03- * H20

THEHHOCHEHICAL PBOPEBTIES:

"CHO, J BOi-1 " S o , J n o l - l K-1 "Cpo, J n o l - S K-1 Ay*z2, (kg mol-1) 1/2 b. Kg aol-1 log Ko 1,88

EQUILIBEIUH QUOTIENTS: I=ionic strength, aol kg-1

2.7"»

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEBENCES: 20.

connENTS: log Ko(l=0) calculated using Daries eguation.

AHERICIUB OXIDES cc = AH26 December 1984

EQUILIBRIUM HE ACTION: 2Aa203(S) + 16H» * 02(g) = HA •*<•*• • 8H20

THEfiHOCHEfilCAL PBOPEBTIBS:

~cHo, J aol-1 : -631UH0 ~3o, J ROl-1 K-1 "Cpo, J aol-1 K-1

Ay~z2, (kg a o l - 1 ) 1/2 b, kg a o l - 1 log Ko : 31 .19

EQUILIEfiiud QUOTIENTS: I = i o n i c s t r e n g t h , a o l kg-1

l o g Q

1/T 25 C

0 . 0 0 31 .19

0 . 0 1

0 . 10

0 . 2 0

0 . 5 0

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFEHENCES:

C0HI1ENTS: ~5o = -1524 l o r 25 C, 1=0.

******•*••*** laiBxciua * Aqueous * 10US * Solutions * re « IH29 * Database » Hovaabec 198<t

EQBILIBRIUH REACTION: <Ua(s) «• 302(g) • 12H+ » 41a*** * 6820

THEBHOCHEHICAi PBOPEBTIES: *rHo, J nol-1 "So, J ao 1—1 K-1 ~Cpo. J BO 1-1 K-1 Ay*z2, (kg «ol-1) 1/2 b, kg aol-1 log Ko

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 0.0 1 0.10 0. 20 0.50 1.00 2.00 3.00

REFERENCES: 1 ; 1 9 -

COMrtENTS: logKo = 669.04 at 25 C and 1=0-

AHERICIUN References June 1984

J. Fuger; F.L. Oetting: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 2. The Actinide Aqueous Ions",International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). D.G. Brookins: "Eh-pH Diagrams for Elements of Interest at theu Oklo Natural Reactor at 25 C, 1 Bar Pressure and 200 C, 1 Bar Pressure, Univ. of New Mexico, Albuquerque, NM 87131 (1980). L.R. Mors.;; 0. Fuger: J. Inorg. Nucl. Chem. 1981, v.43, 2059. A.I. Moskvin: Radiokhimiya 1973, v. 15, 504. J. Fuger: "Thermodynamic Properties of the Actinides: Current Perspectives"; in, Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982), p. 409. F. Oavid; K. Samhoun; R. Guillaumont; N. Edelstein: J. Inorg. Nucl. Chem. 1978, v. 40, 69. G.R. Choppin; P.O. Unrein: "Thermooynamic Study of Actinide Fluoride Complexation"; in, Transplutonium Elements, W. Muller and R. Lindner (eris.); North-Holland, Amsterdam (1976), p. 97. G. Bidogiio: Radiochem. Radioanal. Letters 1982, v. 53, 45. R. Lundqvist: Acta Chem. Scand. 1982, v. A36, 741. S.L. Phillips: "Hydrolysis and Formation Constants at 25 C", LBL-14313, Lawrence Berkeley Lab., One Cyclotron Road, Berkeley, CA 94720 (May 1982). C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ed.; John Wiley & Sons, Inc., New York (1980). I.A. Lebedev; V. Ya. Frenkel; Yu. M. Kulyako; B.F. Myasoedov: Radiokhimiya 1979, v. 21, 817. D. Rai; R.G. Strickert; D.A. Moore; J.L. Ryan: Radiochim. Acta 1983, v. 33. 201. M.S. Caceci; G.R. Choppin: Radiochim. Acta 1983, v.33, 101. C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v.231, 935. L. R. Morss; D. C. Sonnenberger: Abstracts, 1UPAC Conference on Chemical Thermodynamics, McMaster Univ., Hamilton, Ontario, Aug. 13-17, 1984; Abstr. #131.

18. S.L. Phillips; L.F. Silvester: High Temperatures - High Pressures 1884, v. 16, 81.

19. F.L.(letting; M.H. Rand; R.J. Ackermann: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 1. The Actiniae Elements". International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (March 1976).

20. O.F. Kerrisk: "Americlum Thermodynamic Data for the EQS/6 Database", LA-10040-MS, Los Alamos National Laboratory, Los Alamos, NN (July 1984). R.J.Silvaj H. Nitsche: "Thermodynamic Properties of Chemical Species of Waste Radionuclides", NUREG/CP-0052, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (May 1984), p. 70.

21. J. Fuger; V.B. Parker; W.N. Hubbard; F.L. (Jetting: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 8. The Actinide Hal ides ,International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (December 1983).

22. S° by analogy with Pu 20 3(s).

* Aqaeous * * Solutions • * Database *

EQDILIBBIUn BEACTIOS: H3AS04(ag) » H2AS01- » H»

ABSEIIC ARSEIATES CC « AS3 Sept«ab*c 1984

THEBHOCHESICAL PBOPEBIIES: "cHo, J «ol -1 : - 7060 "So. J l O l - l K-1 : - 67 .00 "Cpo, J a o l - 1 K-1 : - 266.00

Ay*z2, (kg 101 -1 )1 /2 : 1.02 b, kg ao i -1 : - 0 . 0 8 log Ko ; - 2.26 B9 = 1.31

EQUILIBRIUM QUOTIEHTS: I = l o n i c s t c e n g t h , ao] kg-I

I / T 25 C 50 C

0 .00 - 2 .26 - 2 .40

0 . 0 1 - 2 . 17

0 .10 - 2.0<4

0 .20 - 1.99

0 .50 - 1.93

1.00 - 1.90

2 .00 - 1.91

3 .00 - 1.96

log Q 75 C 100 C 150 C 200 C - 2.60 - 2.84 - 3.39 - 4.00

250 C 300 C - H.63 5.27

BEFEHEHCES: 1:2;3j4;5;7 COMMENTS:

* * * * * * * * * * * * * ARSE1MC * Aqueous * ABSBMATES * Solutions * re ̂ 154 * Database • septeabar 198»

EQUILIBBIUN BEACTIOH: H3AsOtt<aq) • OH- = H2AS01- • H20

THEBMOCHEMICAL PHOPEBTIES: ~rHo, J aol-1 "So, J aol-1 K-1 "Cpo, J BO 1-1 K-1 Ay~z2, {kg ao l - l ) 1/2 b, kg ao l -1 l o g Ko

- 62865 13.62

- 53.21 0.00

EQUILIBRIUM QUOTIENTS: I-ionic strength, aol kg-1

log Q I/I 25 C 0.00 11.72 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 10.86

75 C 10.11

100 C 9.45

150 C 8.32

200 C 7.39

250 C 6.62

300 C 5.96

* A q u e o u s * * S o l u t i o n s * * D a t a b a s e • *************

ABSEBIC ABSEBATES CC ** AS6 S e p t e a b e r 1984

EQDILXBBIUH REACTION: H3AS0*(ag) = BAS04— » 2H>

THEBNOCHEHICAL PBOPEBTIES:

* r H o t J « o l - 1 z - 3840 " S o , J « o ! - 1 K-1 ; - 1 8 9 . 4 0 - c p o , J n o l - 1 K-1 : - 4 9 5 . 8 0

A y - z 2 , (kg » o l - 1 ) 1/2 : 3 . 0 6 b , k g a o l - 1 ; - 0 . 1 3 l o g Ko 5 - 9 . 2 2 B9 = 1 .57

EQUILIBRIUM Q0OTIEHTS: I=ionic strength, aol kg-1

I/T 25 C 50 C 0.00 - 9.22 - 9.35 0.01 - 8.96 0.10 - 8.59 0.20 - 8.44 0.50 - 8.26 1.00 - 8. 16 2.00 - 8. 14 3.00 - 8. 18

75 C - 9.61

log Q 100 C 150 C 200 C 250 C 300 C 9.96 -10.84 •11.85 -12-93 -14.04

BEFEHENCES; 1;2;3;4;5j7 COMMENTS;

* * > > * » * * * * * • * * * Aqueous » * Solutions * * Database * *************

ABSEHtC IKSEMTES r e = £S5 S e p t e a b ^ c 1984

EQUILIBflltlH EEHCTION: H3AS04 {aq) • 20H- = HAS04— «• 2H20

THERMOCHEHICAL PROPEBTIES:

" c f i o , J m o l - 1 " S o , J a o l - 1 K-l " C p o , J m o l - 1 K-1

A y " z 2 , (kg m o l - 1 ) 1/2 b, kg B O I - 1 l o g Ko

- 1 1 5 4 5 0 - 2 8 . 1 6 - 6 9 . 2 2

EQUILIBRIUM QUOTIENTS: I = i . o n i c s t r e n g t h , n o l k g - 1

1/T L5 C 50 C 75 C

0 . 0 0 1 8 . 7 5

0 . 10

3 . 0 0

17 .16 > 5 . 8 1

log Q 200 C 250 C :oo c 150 c 200 C 250 C 300 C

14.60 12.58 10.94 9.58 8.42

DEFERENCES:

COHMENTS:

* Agueous * * So lu t ions * * D a t a b a s e *

ABSEMC AISEIATES EC » AS7 S a p t a a b a r 1984

EQUILIBBIOM BZ1CTION: H3AS04 (aq) « AS04 * 3H*

THEBHOCHEHICAL PBOPEBTIES:

"rHo , J a o l - 1 " S o , J a o l - 1 K-1 *Cpo, J a o l - 1 K-1

A y ~ z 2 , {kg « o l - 1 ) 1 / 2 b, kg i o l - 1 l o g Ko B9 = 1 . 5 2

14360 - 3 4 6 . 8 0 - 700.80 - 6.12 -0.26 -20.63

EQUILIBRIUM QUOTIENTS: i=ionic strength, lol kg-1

log Q 50 C 75 C 100 C 150 C 200 C I/T 25 C

0.00 -20.63 -20.55 -20.69 -20.98 -21.89 -23-06 0.01 -21.16 0. 10 -21.96 0.20 -22.31 0.50 -22.85 1.00 -23.32 2.00 -23.90 3.00 -24.33

250 C 300 C -24.39 -25.78

REFEBENCES: 1;2:3;4;5;7 COMMENTS:

* Aqueous * * Solutions * * Database •

ABSEIIC A1SBUTBS r c - AS8 S e p t c a b a r 1 9 8 *

EQOILIBBIOH BBACTIOH: H3ASOU (aq ) • 30H- » Aa04 *• 3H20

THEEHOCHEMCAL PBOPEBIIES:

" r H o , J a o l - 1 : - 1 5 3 0 5 5 "So, J a o l - 1 K-1 z - 1 0 « . 9 « " C p o , J l o l - l K-l I - 6 0 - 9 3

A y * z 2 , (kg a o l - 1 ) 1/2 : 3 . 0 6 b , k g a o l - 1 : l o g Ko j 2 1 . 3 3

E Q D I L I B B I U M QUOTIENTS: l = i o u i c s t r e n g t h , a o l k g - 1

I / T 25 C 50 C

0 .00 21 .33

0 . 0 1

1 9 . 2 5

l o g Q

100 C 150 C

15.87 13.24

2 5 0 C

9 . 3 8

7 . 9 1

BEFBREKCES:

COJJflENTS:

•*»«»****«*0* ftBSBIIC * t<]ueo«s * 1ISMITES * S o l u t i o n s • r e * »S2 * Database * Septaaber 198*

BQOIIIBBIOH BSACTIOM: JtS (OH) 3 (aq) • OB- » iS(OH) »-

TKSSHOCBEIHCiL PfiOPBBTIES:

" r H o , J a o l - 1 "SO, J a o l - 1 K-1 ~Cpo , J BO 1-1 K-1

A y ~ z 2 , (kg B O X - 1 ) 1 / 2 to, kg aox-1 log Ko

28275 4 . 9 1 16.80

EQDILIBBIUN Q0OTIEMTS: I*ionic strength, aol kg-1

I/T 0.00 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

25 C 4.69

50 C 4.31

75 C 3.97

log Q 100 C 150 C 200 C 250 C 300 C 3.68 3.19 2.78 2.45 2.17

BEFEBEHCES: COHHENTS;

•**••*»•****« 1ISEMIC • Aqueous * MtSMITES • So lut ions * EC » 1511 • Database * September 1981

EQtJILIBBIOH BE1CTI0K: H3»sOJ(«q) • H20 « As(OH)K- • H»

THEBHOCHEHICAl PEOPEHTIBS: "rflo, J io l -1 "So, J B O I - 1 K-1 "Cpo, J nol-1 K-1

A]Tz2, (kg rol-1) 1/2 b, kg BOJ.-1 log Ko

275J0 - 85.53 - 230.09

1.02 -0 .31 - 9.29

KD9ILIBRI0H QUOTIENTS: l=ionic strength, aol kg-t

I/" 25 C 50 C 75 C log Q

100 C 150 C 200 C 250 C - 8.80

300 C - 9.06 0.00 - 9.29

0.01 - 9.20 0.10 - 9.08 0.20 - 9.0« 0.50 - 9.02 1.00 - 9.09 2.00 - 9.31 3.00 - 9.57

- 8.95 - 8.73 - 8.60 8.52 8.61

REFERENCES: «;5;7 COHHEHTS; ~Cpo from that of B(OH)3(ag) reaction. See Reference 5,

p.367.

* * » » * * * * * * • * * IBSEMtC * Aqueous * U S U m s * S o l u t i o n s * r e * AS9 * D a t a b a s e • S e p t n a b e r 198*

EQ0ILIB8I0H REACTION: H3AS03(ag) « H2AS03- » H*

IHEBHOCHBHICAL PHOPEHTIESi

"rHo , J a o l - 1 : 2 7 5 3 0 *So . J a o l - 1 K-1 I - 84 -30 " C p o , J a o l - 1 K-1 : - 2SIJ.80

Ay~z2, (kg a o l - 1 ) V 2 : 1.02 b , kg a o l - 1 : l o g Ko : - 9 . 2 3

EQUILIBBION QUOTIENTS: I = i o n i c s t c e a g t h , a o l k g - 1

I / T 2 5 C

0.00 - 9 . 2 3

0 .10 - 9 . 13

0 . 5 0 - 9 . 0 9

- 8 .89

- 8 . 6 9

100 C 150 C

- 8 .57

200 C 2S0 C 300 C

8 . 5 3 - 8 . 6 7 8 .91 9 .22

REFERENCES; 2 ; 3 ; 1 0

COMHENTS:

************* AISEHIC • Aqueous * ABSEBiTES • Solutions * re - AS10 • Database • Swpteibcr 198»

EQUILIBRIUM REACTION: H3ASC3 (aq) » HA.103— «• 2H*

THBRHOCHEHICAL PBOPEBTIES: ~rHo, J mol-1 "So , J « o l - 1 K-1 "Cpo, J a o l - 1 K-1

Ay~z2, (kg B O I - 1 ) 1/2 b, kg mol-1 log Ko

S9420 - 2 1 0 . 3 0 - 482 .40

- 2 1 . 3 9

EQUILIBRIUM QUOTIENTS: I= iou iC s t r e n g t h , lOl kg-1

I /T 25 C

0 .00 - 2 1 . 3 9

-20 .67

-20 .19

•19.89

150 C 200 C

-19 .70 - 1 9 . 8 6

- 2 0 . 2 5

- 2 0 . 7 8

BEPEHENCES: 3

COMMENTS:

AtSMIC A1SEVITES EC - ASH Saptaabar 1984

EQUILIBBIDH BGICTIOH: H3A303(»q) * is03 » 3H»

THBHflOCHBHICAt PBOPEBTIES: "cHo, J mo 1-1 "So, J BOl-1 K-1 "Cpo, J «ol-1 lt-1 Ajr-z2,(kg nol-1) 1/2 b. kg nol-1 log Ko

84730 -381.80 - 679.90 6.12

-34.78

EQUILIBBIUN QUOIIEHTS: l=ionic strength, BOI kg-1

log Q I/I 25 C 0.00 -34.78 0.01 0. 10 0.20 0.50 I.C'O

2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C -33.75 -33.06 -32.63 -32.34 -32.56 -33.09 -33.83

HEFEBENCES: 3 COMMENTS:

••*****»**••* ABSEMIC * Aqueous * ABSMATES * Solutions * re * AS13 * Database * September 1984 ************* EQDILIBBIUH BEACTIOH: As205(s) • 3H20 » 2B3AS04<aq)

THERHOCHEMICAL PEOP.EBTIES: ~rHo, J »Ol-1 "So, J mol-1 K-1 "Cpo. J BOl-1 K-1 Ay"z2, (kg nol-1) 1/2 b, kg nol-1 log Ko

22640 52-8? 81.02

EQUILIBBIOB U0OTIEHTS: I=io«ic strength, iol kg-1

log Q I/T 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

25 C 6.73

50 C 6.a3

75 C 6.21

100 C 6.03

150 C 5-79

200 C 5.65

250 C 5.58

300 C 5.56

REFERENCES: 2; 3 COMHENTS:

HSEUC TUOASSSKIISS rc - AS14 S«pt«aber 198*

EQOILIBBIUH BBACTIOH: *32S3(s) » 6120 * 2B3as03{ag) • 38S- » 3H*

TUEBHOCREHICAL PBOPEBTIES:

~rHo, J « o l - l : 256740 "So, J » o l - 1 K-1 : - 4 . 3 6 "Cpo, J ao l -1 K-1 : - 434.14

Ay'z2, (kg ao l - l j 1/2 : b, kg » o l - 1 : log Ko : 45.21

EQUILIBRIUM QUOTIEMTS: I = i o n i c s t r e n g t h , a o i kq-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 -45. 21 -41.79 -39.00 -36.69 -33.16 -30.65 -28.86 -27.56 0.01

BEFBBENCES: 8 .

COMMENTS:

*****•«•••*•# ARSENIC * Aqueous * ARSEMITES * Solutions » EC » AS12 * Database * S«pteaber 198*

EQUILIBRIUM REACTION: AS406 (s) » 6H20(1) » 4H3»s03<=g)

THERNOCHEHICAL PROPERTIES: "l.Ho, J a o l - 1 : 3 4 8 » 0 " S o , J BOl-1 K-1 : 1 4 7 . IH "Cpo, J B O I - 1 K-1 : 1 7 5 . 3 7

Ay~z2, (kg aol-1) 1/2 : 0-00 b, kg aol-1 : l o g Ko : 1 . 5 8

EQDlLIBRIUfl QUOTIENTS: I=ionic strength, aol kg-1

I/T 25 C 50 C 75 C log Q

100 C 150 C 200 C 2S0 C 300 C 0.00 1.58 0.01 0.10 0.20 0.50 1.00 - 0.68 2.00 3.00

2.08 2.56 3.02 3.89 4.68 5.42 6.10

HEFEBEKCES: 2;3;5 COMflEHTS:

* Aqueous * * So lut ions * * D a t a b a s e *

HSIIIC PHBEBQE r e * AS15 S e p t e a b e c 1984

EQUILIBBIUH BEACTIOM; H3As03(aq) * H20 « H3as04<aq) • 2H» * 2 e

THEBflOCHEMICAL PBOPEBTIES:

~ r H o , J « o l - 1 : 1 2 5 5 8 3 " S o . J a o l - 1 K-1 ~Cpo, J a o l - 1 K-1

»y"z2, (kg aol-1) 1/2 b , kg a o l - 1 l o g Ko I - 1 9 . 4 4

EQUILIBBIOH QUOTIENTS: I=ionic strength, aol fcg-1

log Q I/T 25 C 0.00 -19.HH

0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFE8ENCES: 11 COMHENTS:

* Aqueous * * solutions * * Database *

A1SEKIC A8SEIATES re » AS16 Septaaber 198"*

EQUILIBRIUM REACTION: FeAs04.2H20 » Pe»»+ + AsOU * 2H20

THERHOCHEMCAL PBOPEBIIES: "cHo, J aol-1 "So, J aol-1 K-1 "Cpo, J nol-1 K-1 Ay-z2,(kg nol-1) 1/2 b, kg JO 1-1 log Ko : -20.25

EQUILIUBIUS QUOTIENTS: l=ionic strength, aol kg-1

log Q X/T 25 C 0.00 -20.25 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

8EFERENCES: J1

COMMENTS:

* Ayueous * * Solutions » * Database *

ARSENIC OBGAWC tc = »S17 Septeaber 198*

EQDH.IBBIDH RBACTIOM: «CH3) 2AS0 (OH) (aq) = (CH3) 2AS02- • H*

THEBHOCHEHICAL PROPERTIES: ~rHo , J a o l - 1 " S o . J a o l - 1 K-1 "Cpo, J a o l - 1 K-1

A y " z 2 , (kg a o l - 1 ) 1 /2 b , kg a o l - 1 l o g Ko 6.20

EQUILIBRIUM QUOTIENTS: I = i o i ; i c s t r e n g t h , a o l k g - 1

l o g Q

J /T 25 C

0 . 0 0 - 6 . 2 0

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 5

COMMENTS:

****•**•»**»* ARSEMC * Aqueous * OfiGAHIC * Solutions * EC = AS18 * Database * Septeabee 198*

EQUILIBRIUM REACTION: C1I3ASO (OH) 2 (aq) * CH3ASO20H- » H+

THESMOCHEMICAL PSOPEBTIES:

"rHo, J BO 1-1 "So, J aol-1 K-1 "Cpo, J HOJL-1 K-1 Ay"z2, (kg nol-1) 1/2 b, kg aol-1 log Ko : - 3.60

EQUILIBRIUM QUOTIENTS: I=ionic strength, «ol kg-I

1/T 25 C

0.00 - 3.60

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFEBENCilS: 5

COMMENTS:

ARSENIC References

August 1984

R.A. Robie; B.S. Hemingway; J.R. Fisher: •Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar {100,000 Pascals) Pressure and at Higher Temperatures", Geological Survey Bulletin 1452, U.S. Government Printing Office, Washington, DC 20402 (1978). D.D. Wagman; U.H. Evans; V.B. Parker; R.H. Schuiim; I. Halow; S.H. Bailey; K.L. Churrsey; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khoaakovsky: "Handbook of Thermodynamic Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochim. Acta 1981, v. 45, 855. C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). T.R. Holm; M.A. Anderson; D.G. Iverson; R.S. Stanforth: "Heterogeneous Interactions of Arsenic in Aquatic Systems", in. Chemical Modeling in Aqueous Systems, E.A. Jenne (ed.), ACS Symp. Ser. 93, American Chemical Society, Washington, DC (1979), p. 711. C.F. Baes; R. E. Mesmer: Am. J. Sci. 1981, v. 281, 935. G.K. Johnson; G.N. Papatheodorou; C.E. Johnson: J. Chem. Thermodynamics 1980, v. 12, 545. F.J. Millero: Geochim. Cosmochim. Acta 1983, v. 47, 2121. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). J.W. Ball; D.K. Nordstrom; E.A. Jenne: "Additional and Revised Thermochemical Data and Computer Code for WATEQ2", WRI78-116, U.S. Geological Survey, Menlo Park, CA 94025, 2nd Printing (Sept. 1981). B.K. Kasenov; S.M. Isabaev; R.B. Shashchanov<u K.M. Mamraeva: Russ. J. Phys. Chem. 1984, v. 58, 605.

• l g a e o a s * • S o l u t i o n s * • D a t a b a s e *

8Q0ILIBEI0H REACTION: C02 (9) * C02{«g)

caiBoa e«5is EC * C5 S e p t e m b e r 1 9 8 *

THESHOCHENICiL PROPERTIES:

"rHo, J i i o l - 1 s - 2O290 "SO, J a o l - 1 K-1 s - 9 6 . 0 6 "Cpo, J a o l - 1 K-1 : 2 0 S . 8 9

4 y ~ z 2 , ( k g i o l - J ) 1 / 2 : 0 . 0 0 b . kg « o l - 1 j l o g Ko : - 1 . 4 7

EQOlLIBBIOi! QUOTIENTS: l = i o n i c s t r e a g t h , s o l k g - 1

I / I 2 5 C

0 .00 - 1.D7

0 . 5 0

- 1.71

l o g Q

100 C 150 C 2 0 0 C 250 C 300 C

1 . 8 5 1 . 9 3 1.93 - 1.79 - J .57 - 1.30

REFERENCES: 5 ; 7 ; 9 ; 1 0 ; 1 8

COHHEHTS:

* Aqueous * » Solutions * * Database *

EQUILIBRIA KEACTIOK: C02 (aq) • Oil- = HC03-

ClKBOM BICABB0N1TBS re = el September 1984

IHEBHOCHEKICAL PEOPEBTIES: "rHo, J a o 1 - 1 ~ s o , J a o l - 1 K-1 "Cpo , J « o l - 1 K-1

A y ~ z 2 , { k g « o l - 1 ) 1 /2 b , kg a o l - 1 l o g Ko

- 4 8 1 6 5 - 15.65 - 15B.00

0.00 0.07

EQUILIBBIDH QUOTIENTS: I=ionic strength, col kg-!

log <J I / T 25 C 50

0.00 7.62 6 .

0.01 7.63

0.10 7.64

0.20 7.64

0.50 7.67

1.00 7.70

2.00 7.77

3.00 7.84

75 C 6.31

100 C 5.73

150 C 4.67

200 C 3.74

250 C 2.89

300 C 2.14

&EFEBEHCESJ 5s7;9;10; 18;32 COHHENTS:

•*•••*•**•*** CABBOI * igneous * BXCMBOM&T8S * Solutions * re « C8 * Database * S«pt««i>ec 198* EQOILIBBIOH HEACTIOK: C02(aq) • H20 » 0CO3~ • I*

THEBHOCHEMICA1 PBOPEBTIES: *EHo, J ao l -1 i 9060 "So, J »o l -1 K-1 2 - 91 .20 "Cpo. J »o l -1 K-1 : - 338.00

Ay"z2, (kg »ol-1) 1/2 j 1.02 b, kg i o l - 1 : log Ko : - 6 .35

EQUILIBBIUB QUOTIENTS: I = i o n i c s t x e a g t h , ao l kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 - 6.35 - 6.28 - 6.31 - 6.40 - 6.72 -7-19 - 7.78 - 8.50 0.01 0.10 -6.12 - 6.04 - 6.05 -6.12 - 6.40 - 6.80 - 7.31 - 7.86 0.20 0.50 - 5.98 - 5.90 - b.90 - 5.95 - 6.18 - 6.53 - 6.94 - 7.36 1.00 - 5.94 - 5.85 - 5.84 - 5.89 - 6.09 - 6.38 - 6.7J - 7.05 2.00 3.00 - 5.96 - 5.87 - 5.85 - 5.87 - 5.98 - 6.14 - 6.29 - 6.36

BEFEBEHCES: 3;7;10 COHHENIS: These ace smoothed values; see Bef. 1,33.

EQUILIBBIUt! BEACTIOH: C02(aq) » U20 = HC03- • H*

CARBON DICAKBONATES EC = C9 September 1984

THEEMOCHEMICAL PBOPEBIIES: "rUo, J QOI-1 : 7640 "So, J nol-1 K-l : - 96.31 "Cpo, J mol-1 K-1 : - 371-29 Ay~z2, (kg aol-1) 1/2 : 1.02 b, kg nol-1 : -0. 1B log Ko : - 6.37

EOOILIBBIUN QUOTIEHTS: I=ionic strength, uol kg-1

log Q I/T 25 C 0.00 - 6.37 0.01 - 6.28 0.10 - 6. 14 0.20 - 6.09 0.50 - 6.04 1.00 - 6.04 2.00 - 6. 13 3.00 - 6.26

SO C 75 C 100 C 150 C 6.33 6.40 - 6.55 - 7.03

200 C 7.66

250 C - 8.36

300 C - 9.10

BEFEBEHCES: 5j9;10;20;21 COHSENTS:

*****«••****• C1BB0B • Igneous * BXCMBOliTIS * S o l u t i o n s * r e * C3 « Database * S«pt««bar 1984

EQUIUBBIOH BEACTIOH: H2C03(ag> * OB- » HC03- + H20

THEHHOCHEMCAL PBOPERTIES:

"rHo, J nol-1 : - 48145 "So, J aol-1 K-» ; - 15.58 "Cpo, J aol-1 K-l : - 157.71 Ay"z2, (kg «ol-1) 1/2 z 0.00 b, kg no1-1 : 0.07 log Ko : 7.63

EQOILIBBIOH Q00TIENT5: I=ionic strength, nol kg-1

log Q I / T 25 C

0.00 / .63

0.01 7.63

0.10 7.64

0.20 7.64

0.50 7.67

1.00 7.70

2.00 7.77

3.00 7.84

50 C 75 C 100 C 150 C 200 C 6.94 6.31 i.73 4.68 3.74

250 C 2.90

300 C 2.14

REFERENCES: 5;9;10 COMMENTS:

* igneous • * Solutions • * Database *

EQUIlIBBItffl RBACTIOH: HC03- + OH- = C03— «• H20

CARBON C.'.BBO"ATES rc = £2 September 1981

~EHo, J u i o l - l s - 4 0 9 5 5 " S o , J =CP1-1 K-1 5 - 67.<t8 "Cpo, J mol -1 K-1 : - 3 5 . 7 1

A y " z 2 , (kg a o l - 1 ) 1 / 2 : 1 . 0 2 b , kg mol -1 : 0 . 15 l o g Ko : 3 . 6 6

EQ0ILIBS1OH QUOTIENTS: l = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

1/1 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 3.66 3.09 2.59 2.16 1.43 0.82 0.32 - 0.12 0.01 3.75

0. 10 3.92

0.2Q a.01

0.50 U. 16

1.00 «. 32

2.00 4.56

3.00 U.76

BEFEHENCES: 5 ; 7 ; 9 ; 1 0 ; 3 2

COflHENTS:

* agueoas • * Solutions * * Database *

EQUILIBBIDM BE1CTIOM: HCQ3- » C03— » II*

C»I101i CiSBOiaTltS rc » C» S«ptMDM 1984

IHERBOCBEIUCaL PflOPEHTIES:

"rHo, J a o l - 1 "So, J aol— 1 K-1 "Cpo , J a o l - 1 K-1

4 y " z 2 , (kg a o l - 1 ) 1/2 b, kg ao l -1 log Ko

14850 - 1 4 8 . 1 0 - 249 .00

2 .04 - 0 . 1 3 - 1 0 . 3 4

EQUH.IBBIUM Q0OTIEKTS: I * i o n i c s t r e n g t h , aol kg-1

1/T 25 C

0 .00 - 1 0 . 3 4

0 .01 - 1 0 . 1 6

0 .10 - 9 .86

0 .20 - 9-74

0..50 - 9 .56

1.00 - 9 .45

2 .00 - 9 .40

3 .00 - 9 .44

50 C 75 C

l o g Q

100 C ISO C

-10.16 -10 .11 - 1 0 . 1 2 •10 .28

-10 . 57

250 C 300 C

•10.14 -11 .35

UBFBBENCES: 5j9;10 cotiMEtns:

* * * • * * * * • * • • * C1BB0R * A y u e o u s * BICA8B01UTES * S o l u t i o n s * r e = C6 * D a t a b a s e * S e p t e m b e r 1984

EQOILXBBIOfl BEACTION: Ca»> * H2C03(ag) = CaHC03* » H*

" r H o , J m o l - 1 : 1380 " S o , J m o l - 1 K-1 : - 6 6 . 9 0 " C p o , J m o l - 1 K-1 : - 1 1 5 . 5 0

Ay~z2 , ( kg mo 1-1) 1/2 : - 1.02 b , kg m o l - 1 : l o g Ko : - 3 . 7 4

E Q U I L I B R I U M gt lOTlESTS: l = i o n i c s t r e n g t h , n o l k g - 1

l o g Q

I / T 25 C 50 C 75 C 100 C 150 C 200 C

3.71* - 3.7a 3.79 3.87 l». 08 - 4 . 3 5

- 4 .64

- 4 . 9 4

BEFiSBENCES: 5 ; 9 ; 1 0 ; 1 b

COMMENTS:

EOOILIBfilOfl BEACXIOI: Ca»* » BC03- » CaHC03*

CAIBOI BZCMBOIMIS rc - C7 S«pt«Bb«r 198%

TBEBHOCHEHICAL PBOPEBXIES: "*rHo, J BOl-1 "SO, J BOl-1 K-1 "Cpo, J BOl -1 K- l Ay*z2, (kg aol-1) 1/2 b, kg ao 1-1 log xo

6230 29.30 225.50 2.01* 2.63

EQUILIBKIOB QOOIXEMTS: J=ioaic straagth, aol kg-1

log Q I/T 25 C 0.00 2.63 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 2.58

75 C 2.61

100 C 150 C 200 C 250 C 300 C 2.68 2.95

BEFEBEHCES: 10;16 COHHBHTS:

CARBON References April 1984

R.L. Berg; C.E. Vanderzee: J., Chem. Thermodynamics 1978, v. 10, 1113. E. Wilhelm; R. Battino; R. MilcocK: Chem. Rev. 1977, v. 77, 219. C.S. Patterson; G.H. Slocum; R.H. Busey; R.E. Hesmer: Geochim. Cosmo:him. Acta 1982, v. 46, 1653. J.C. 'eiper; K.S. Pitzer: J. Chem. Thermodynamics 1982, v. 14, 613. J.w. Cobble; R.C. Hurray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (Hay 1982). R.N. Roy; J.J. Gibbons; H.D. Wood; R.W. Williams; J.C. Peiper; K.S. Pitzer: J. Chem. Thermodynamics 1983, v. 15, 37. J.A. Barbero; L.G. Hepler; K.G. HcCurdy; P.R. Tremaine: Can. J. Chem. 1983, v. 61, 2509. H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties. J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ed., John Wiley & Sons, Inc., New York (1980). M. Takahashi; Y. Kobayashi; H. Takeuchi: J. Chem. Eng. Data 1982, v. 27, 328. A. Zawisza; B.V. Malesinska: J. Chem. Eng. Data 1981, v. 26, 388. A. Yasunishi; F. Yoshiaa: J. Chem. Eng. Data 1979, v.24, 11. A.J. Ellis; R.M. Golding: Am. J. Sci., 1963, v.261, 47. S.L. Phillips; L.F. Silvester: Inorg. Chem. 1983, v. 22. 3848. W. Goroy; W.J.O. Thomas: J. Chem. Phys. 1956, v. 24, 439. CODATA Task Group on Key Values for Thermoaynamics: CODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

19. O.A. Palmer; R. Van Eldik: Chem. Rev. 1983, v. 83, 651. 20. F.J. Mi Hero; V. Thurmond: J. Solution Chem. 1983, v. 12, 401. 21. V. Thurmono; F.J. hi Hero: J. Solution Chem. 1982, v. 11, 447. 22. R.N. Roy; J.J. Gibbons; R. Williams; L. Godwin; G. Baker; J.H. Simonson;

K.S. Pitzer: J. Chem. Thermodynamics 1984, v. 16, 303. 23. R.A. Robinson; J.B. Macaskill: J. Solution Chem. 1S79, v. 8, 35. 24. C.E. Vanderzee: J. Chem. Thermodynamics 1982, v. 14, 219. 25. S.H. Hyun; R.P. Danner: J. Chem. Eng. Data 1982, v. 27, 196. 26. G.K. Johnson; K.H. Gayer: J. Chem Thermodynamics 1980, v. 12, 705. 27. W.L. Lindsay: Chemical Equilibria in Soils, John Wiley l> Sons, Inc., New

York (1979). 28. J.P. Hershey; S. Sotolongo; F.J. Millero: J. Solution Chem. 1983, v. 12,

233. 29. Stanaard Methods for ',he Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. J. Cone; L.E.S. Smith; W.A. Van Hook: J. Chem. Thermodynamics 19/9, v. 11, 277. 31. F.J. Millero; D.R. Schreiber: Am. J. Sci. 1982, v. 282, 1508. 32. J.U. Larson; K.G. Zeeb; L.G. Hepler: Can. J. Chem, 1982, v. 60, 2141. 33. R.E. Mesmer: Private Communication, September 14, 1984.

* Aqueous * * So lu t ions * * D a t a b a s e *

"QUILI3RIIJH REACTION: HF (aq) r- • H*

FLOORING FLUORIDES rc = n Septeaber 1964

rHSRtlOCHSMICAL PHOPE8TIES:

"cHo, J mol -1 : - 14068 "So, J l o l - 1 K-1 : - 1 0 8 . 1 6 ~Cpo, 6 mol-1 K-1 : - 161.30

Ay~z2, (kg uo l -1 ) 1/2 : 1.02 b , kg m o l - 1 : - 0 . 2 0 l o g Ko : - 3 .18

EQUILIBRIUM UUOTIiiHTS: I = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

1 / 1 25 C

0.00 - 3. ia

0.01 - 3.09

0 .10 - 2 .95

0.2U - 2 .90

0 .50 - 2 .6b

1.00 - 2 .87

2 .00 - 2 .98

J. JO - J . 13

>0 C 73 C 100 C 150 C 200 C

3.^0 - 3.63 - 3 .d8 - 4 .37 - 4 .87

3. 14 - 3.29 - 3.42

- 5 . 3 6

- 5 . 8 3

3.64 - 3 .82 3.98 - 4 .12

REFERENCES: 2 ; i ; 4 ; 7 ; a ; 1 1 ; 1 2 .

JOKHSNTS:

* Aqueous * * Solutions * * D a t a b a s e *

^'.IILIBBJHH REACTION: HF (aq> • OH- = F- * H20

PLOOBINE PLUOBIDES tc = F2 Septeaber 1984

•."HESHOCHEJ1ICAL PH0PEBTIE3:

T H o , J mol -1 : - 6 9 8 7 3 " S o , J a .o l -1 K-1 : - 2 7 . 5 4 " C p o , J m o l - 1 K-1 : 5 1 - 9 9

Ay~z2,<(kg <ool-1) 1 /2 : 0 . 0 0 b , kg n o l - 1 : 0.02 l o g Ko : 10.B7

B0OJ.I.IBHIUH i 'UuTlENTS; I = i o n i c s t r e n g t h , mol k g - 1

l o g Q

I / T 25 C

0 .00 10.87

0 .0 1 10.87

0 .10 10.87

0 .20 10.37

O. ' JU 10.bid

1.00 10.89

2 .00 10.91

5.00 10.V3

9 . 8 6

75 C 100 C

J .07 8 .40

7 . 3 3

HEFERRNCES: 1 ; ^ ; J ; 4 ; b

COMMENTS,:

BROMINE, CHLORINE, FLUORINE References June 1984

1. O.O. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The N8S Tables of Chemical Theroodynamic Properties, J. Phys. Chem. Ref. Oata 1982, v. 11, Suppl No. 2.

2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: 'Handbook of Thermodynamic Data"translated by G.O. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS.

3. O.K. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982).

4. O.W. Larson; K.G. Zeeb; L.G. Hepler: Can. 0. Chem. 1982, v.60, 2141. 5. P. Becker; B.A. Bilal: J. Solution Chem. 1983, v. 12, 573. 6. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4:

Inorganic Complexes, Plenum Press, New York (1976). 7. A.J. Ellis: J. Chem. Soc. 1963, 4300. 8. CODATA Task Group on Key Values for Thermoaynamics: CODATA Kecommended

Key Values for Thermodynamics 1377, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard lis Montmorency, 75016 Paris, France (April 1978).

9. G. T. Hefter: 0. Solution Chem. 1982, v. 11, 45. 10. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. 0. Chem.

1983, v. 61, 2509. 11. R.O. Lemire; P.R. Tremaine: 0. Chem. Eng. Oata 1980, v. 25, 361. 12. G.T. Hefter: J. Solution Chem. 1984, v. 13, 457.

• Aqueous * • S o l u t i o n s * * Database * ************* EQUILIBRIUM REACTION: 12(g) - I 2 ( a q |

XO0IU IODISES • r c « 12 S«pt««ber 1980

THEHMOCHEMICAL tBOPKfiTIBS:

*rHo, J a o l - 1 : - 39821 "So, J B O I - 1 K-1 : - 1 2 3 . 3 7 "Cpo, J n o l - 1 K-1 : 293.10

Ay*z2, (kg no l -1 ) 1/2 b, kg no 1-1 log Ko : 0 .53

EQUILIBRIUH QUOTIENTS: i = i o n i c s t r e n g t h , a o l kg-1

0 . 10

25 C 50 C 75 C 100 C 150 C 200 C

0.53 0.04 - 0.30 - 0 .52 - 0 .69 - 0.6<l

250 C 300 C - 0.45 - 0.16

DEFERENCES: 5;10 COMMENTS:

*•*»***••*•*» * Aqueous * * Solutions * * Database *

EQUILIBRIUM BE.ACT10H: 1 2 ( s ) = 1 2 ( g )

ICDIHE IODIKES rc = 13 September 1904

TflEHHOClIEHICAL PROPERTIES:

* rHo, J mol-1 : 62421 "SO, J a o l - 1 K-1 J 144.43 "Cpo, J mol-1 K-1 : - 17.54

Ay~z2. (kg a o l - 1 ) J/2 b, kg nol -1 log Ko : - 3 .39

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , ao l kg-1

l o g Q

I /T 25 C

0.L0 - 3.39

50 C 75 C 100 C

- 2 .54 - 1.83 - 1.21

150 C 200 C 250 C 300 C

0 .21 0 .57 1.20 1.70

REPEEENCiSS: 5;<»;10:ia

COMMENTS;

* Aqueous * * Solutions » * Database *

EUUILIBBIUH REACTION: 12 (sj » I2(ag)

IODIIE IODIIIS rc • II S«pt««b«r 19 W ,

THEBHOCHEBICAL PBOPEBIIES:

" rHo, J a o l - 1 "So , J s o l - 1 K-1 "Cpo, J a o l - 1 K-1

Ay~z2, (kg ao l -1) 1/2 b , kg BO 1-1 log Ko

22600 21 .06 275.56

EQUILIBBIUH QUOTIENTS: I = i o a i c s t r e n g t h , aol kg-1

log Q I/T 25 C 0.00 - 2.86 0.01 0. 10 0.20 0.50 1.00 2.00 j.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C - 2.50 - 2.13 - 1.73 - 0.90 - 0.07 0.75 1.55

REFEBENCFS: 2:5;9;10 J 15;IB COMMENTS:

IODISE IODATES EC » 14 September 1964

EQUILIBfilUH BEACTIOH: 312 (aq) + 6OH- = 1 0 3 - • 5 1 - • 3H20

- 54320 514.29

- 721 .63 0 .00

THPHHOCHEMICAL PROPERTIES:

" r H o , J m o l - 1 " S o , J m o l - 1 K-1 " C p o , J m o l - 1 K-1

A y " z 2 , (kg mol-1) 1/2 b , kg m o l - 1 l o g Ko

EQUILIBRIUM QUOTIENTS: I = i o n i c s t c e a g t h , > o l k.g-1

l o g 0

1 /1 25 C

0.00 36.37

0 . r j 0

3 5 . 5 2

3 4 . 5 8

33 .58

3 i . 50

2 9 . 3 9

2 7 . 3 0

KEFEfiENCKS: 1 ; 9 ; 1 0 ; 4 0

COMMENTS:

* * * * * * * * * * * * * IODINE * igueous « lODaXSS * Solutions * re « 15 * Database * Saptaabor 1984 **»*»»»»»**•*

EOUILIBHIOH BEiCTION: 312 (aq) • 3H20 =» 103- • 51- • 6H*

TllEHHOCHEHICAL PfiOPEHTIES:

"rHo, J aol-1 : 280510 "So, J aol-1 K-l : 30.57 "Cpo, J «ol-1 K-t : -2001.37 ay-22, (kg aol-1) 1/2 : 6.12 b, kg aol-1 : log Ko : -K7.55

log Q i/r 25 c 0.00 -U7.S5

-<*<t.08

75 C 100 C

-U1.69 -40.12

-38.75

-38.99

-90.23

-42.13

REFERENCES: 1;9;1U;<|0

COnWENTS:

************* IODINE * Aqueous * IODATES * Solutions * re • 16 * Database • September 1984 ************* EJUILIBfilUH HEACTION: HI03(ag) • OH- = 1 0 3 - • H20

THEBNOCHEHICAL PBOPEBTIES: "Clio, J sol-1 : - 63455 *So, J mol-1 K-1 : 39.62 ~cpo, j mol-1 K-1 : 179.29 Ay"z2,(kg »ol-1> 1/2 : 0.00 t, kg nol-1 : log Ko : 13. 19

log 0 I/T 25 C 0.00 13.19 0.01 0.10 0.20 0.50 1.00

50 C 12.35

75 C 11.69

100 C 11.17

150 C 10.41

200 C 9.93

250 C 9. on

300 C 9.48

BBFK6KNCES: 5 :9 ; lli; 16; 40 C'ua.lENIS:

************* * Aqueous * * Solutions * * Database * *****•**•*•** EQOILIBRIOH RE1CTIOM; HI03(aq) « 1 0 3 - * H+

IODIHB I 0 D 1 I I S t c - 17 saptaalwc 1984

THER.10CHEHICAL PROPERTIES:

~rHo , J a o l - 1 : - 7650 *So, J « o l - 1 K-1 : - i n . 0 0 " C p o . J a o l - 1 K-1 : - 3 1 . 0 0

Ay"z2, (kg a o l - 1 ) 1/2 s 1.02 b, kg a o l - 1 : - 0 . 2 5 l o g Ko : - 0 .18 B9 = 0 .37

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , ao l kg-1

I / T 25 C

0 .00 - 0 .78

0 . 0 1 - 0 .69

0-10 - 0 .57

0.20 - 0 .50

0 .50 - 0 .60

1.00 - 0 .82

2 .00 - 1.39

3.00 - 2-0-4

50 C 75 C

- 0 . 8 8 - 0 .99

100 C 150 C 200 C

- 1 . 0 9 - 1.27 - 1.44

250 C 300 C

- 1.59 - 1.74

REFERENCES: 5 ; 9 ; 10 ; 16-.40

CQHHENTS:

* lgueous * * solutions * * Database *

BQUILIBRIOH HB&CIIOH: B3X06— • H» = B4I06-

IODIKE PEBIODATES rc - 115 Hoveaber 198*

THEHflOCHEHICil. PBOPEBIIES: "rHo, J ao1-1 *So, J aol-1 K-l "Cpo, J sol-J S-1 Ay~z2, (kg aol-1) 1/2 b. Kg aol-1 log Ko

- 3400 116.70

EQDILIBBIUH QUOTIENIS: I=ionic strength, aol kg-1

log Q 1/1 25 C 0.00 6.69 0.01 0.10 0 20 „. 50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEBENCES: 10;11;51. COflHENIS:

• Aqueous # • Solutions * • Database *

XOOIll PUIOBUIS re » 116 •o««afc«c 19B*

BQUXLIBBIDH BE1CTIOB: H0XO6- • B» * H5IOG(ag)

TBBBflOCBiaiCAL PBOPIBIIIS:

"rflo, J ao l -1 "So, J ao l -1 K-l "Cpo, J a o l - 1 K-l

Ay"s2. (kg ao l -1 ) 1/2 b , kg a o l - 1 log Ko

0 56 .90

EQOILIBBIon QDOTIEITS: I = i o n i c s t rangtk , ao l kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 2.69 0.01 0.10 0.20 0.50 1.00 ^.00 3.00

BBFiSBENCBS: 1 0 ; 1 1 ; 5 1 .

COflHEKTS:

GQOIUBBXOfl SE1CTIOH: H4I06- 1 0 4 - • 2H20

IOMKE PMXODIXES re «= 117 Sovaabec 1984

THEHflOCUEHICAL PROPBfillBS: * r H o , J a o l - 1 " S o , J BOl -1 K-1 "Cpo, J BOl-1 K-1 *y~z2, (kg aol-1)1/2 t, kg aol-1 log t.o

36240 149.62

KQOILIBBIOB QOOIIBMXS: I=ionic strength, aol kg-1

l o g Q

1/1 2 5 C

0 . 0 0

0 . 0 1

50 C 75 C 100 C 150 C 200 C 2 5 0 C 300 C

HEfEBENtBS: 1 0 ; 1 1 ; S 1

COHHEBTS:

************* IODIII * Agueoas * OXIIOBIDES * Solutions * re - 18 * Database * Soptciber 19S4 ************* EQUIUBKIOH BEACIION: 12 (aq) • H20 * HlO(ag) • H* • I -

THEBMOCHEHICAL PBOPEBTIES: cHo, J aol-1 68230 So, J aol-1 K-1 - 5.01 Cpo, J aol-1 K-1 - 413.69 Ay*z2,(kg aol-1) 1/2 1.02 b, kg BOI-1 log Ko -12.22

EQUII.IBRIUH QUOTIENTS: I=ionic strength, sol kg-1

log Q I/T 25 C 0.00 -12.22 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C -11.36 -10.75 -10.32 - 9.87 - 9.78

250 C 300 C

- 9 . 93 - 1 0 . 2 3

REFERENCES: 1 ; 2 ; 1 0

COflrtEN'IS:

************* IODISE * Aqueous * OZTIODIDSS * Solutions * re = 19 * Database * September 1944 ************* EQUH.ID6I0H REACTION: HIO (ag) • OH- = 1 0 - • H20

THERHOCHEMICAL PEOPEETIES:

*rHo, J mol-1 : - 25205 "So, J mol-1 K-1 : - 20.. .8 "Cpo, J mol-1 K-1 : 169.39 Ay"z2, (kg mol-1) 1/2 : 0.00 b, Jcg mol-1 : log Ko : 3.37

EQUILIBRIUM QUOTIENTS: I=ionic strength, «ol kg-1

:/x o.oo 0.01

25 C 50 C

2.78 3.37

REFERENCES: 1;2;10

COMMENTS: Cpo ui 10- calculated froa data in Reference 8.

I O D I M OXTIODIDES r c » 110 S e p t e m b e r 19S«

EQUILIBBIUH BEACTION: I - • 1 0 - - I 2 0 - -

T H BR MOCH EH: c A L P ROP EBTIES:

"rHo, J BOl-1 " S o , J » o l - 1 K-1 "Cpo. J « o l - 1 K-1

&y"z2, (kg a o l - 1 ) 1/2 b , kg i o l - 1 l o g Ko

EQUILIBRIUM QUOTIKNTS: I = i o n i c s t r e n g t h , » o l k g - 1

l o g Q

I / T 25 C

0.00 - 1.34

0 . 0 1

50 C 75 C 100 C 150 C 200 C 250 C 300 C

DEFERENCES: 2

COMHENTS:

• » * • * * * • * * * * • IODINE * A q u e o u s * OIIIODIDES * Solutions * re « 111 * Database * Septeibec 1984 ************* E^UILIBBIUM BEACTION: 1 0 - • I - • H20 » I* . , . . - • OH-

THEBNOCHEMICUL fROPBBI lES:

*cHo, J a o l - 1 : 10875 "So , J mol-1 K-1 : 19 .«8 "Cpo, J u o l - 1 K-1 : 0 .01

A y - i 2 , ( k g a o l - 1 ) 1 / 2 : 0-00 b, kg s o l - 1 : log Ko : - 0 .89

EQUILIBBIUM QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

l o g Q

I / T 25 C

0 . 0 0 - 0 . 8 9

2 . JO

- 0.7U

- 0 .61

- 0 .50

• 0 .32

- 0. 18

- 0.07

EEFEHENCES: 2

COMMENTS: Used " r G o t o r I20H- • 1 6 5 . 0 ; c d l c u l a t e d tram B e f e r e n c e 2 .

************* IODINE * Agueous * IODIDES * solutions * re * 113 * Database * Saptaabac 1984

EQBILIBBIOH BEACTIOIT: 10- • 21- • H20 • 13- • 20H-

THEBUOCHEHICAL PROPERTIES: *rHo, J «ol-1 : - «820 "So, J aol-1 K-1 : - 60.03 "Cpo, J «ol-1 K-1 : 10.01 Ay~z2, (kg aol-1)1/2 : 0.00 b, kg nol-1 : log Ko : - 2.29

EQUlLIBBiun QUOTIEHTS: l*ionic strength, sol kg-1

l o g Q

I /T 25 C

0.00 - 2.29

0 . 1 0

0 . 2 0

0 . SO

50 C 75 C 100 C 150 C 200 C 2 5 0 C 3 0 0 C

- 2 . 3 5 - 2 . » 1 - 2 . * 5 - 2 . 5 1 - 2 . 5 5 - 2 . 5 8 - 2 . 6 0

BUFEIiENCUS: 2

COBNENTS:

* Aqueous * » S o l u t i o n s * * D a t a b a s e *

BQOIUBRION BEACTIOM: 12 (aq) • I - » 1 3 -

IOCIIB IODIDIS r c » 112 S a p t a a b e c 198U

THEHMOCHENICAL PHOPEHTIBSS

" r H o , J n o l - 1 l - 17600 " S o , J a o l - 1 K-1 : - * . 6 0 "Cpo, J BOl-1 K-1 ! - 2 1 . 0 0

A y * z 2 , (kg no 1-1) 1 /2 : 0 . 0 0 b , kg n o l - 1 ; l o g Ko : 2 .8V

EQUIL1BRIUH QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 2. an 2.60 2.39 2.19 1.87 1.60 1.37 1.17 0.01 2.87 0.10 2.07 0.20 2.87 0.50 2.86 1.00 2.8b 2.00 2.87 i . 00 2.83

fiECEHENCES: 1 j 5 ; 5 2 .

oOHMENXS: L o g Q ( I ) i n t e r p o l a t e d f c o i d a t a i n Bef . 5 2 .

******•••*•** IODIIII * Aqueous * OXIDES * s o l u t i o n s * r e » 114 * Database * October 11984

EQUILIBBIDS EBaCTIOJI; 1205 j s ) • H20 " 2HI03 (»g)

THBHMOCHEHICaL P10PBR1IES: "rHo, J aol-1 : 9840 "So, J «o1-1 K-l ; 133.89 "Cpo, J »ol-1 K-1 : - 284.29 Ar*z2,(Kg BOI-1) 1/2 : b, kg BOI-1 : log Ko : 5.27

BUDILIBBIUH QUOTIENTS: I-ionic strength, aol kg-1

loj 0 I/I 25 C O.QO 5.27 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 5.35

75 C 5.35

100 C 5.27

150 C 4.96

200 C 4.54

250 C 4.08

300 C 3.51

KEFEREHCES: This «ork. CONHEUTS: Cpo of 1205 (s) based on As205<s), P205(s), V205(s),

Xa205(s).

IODINE References Nerch 1984

O.A. Palmer; M.K. Lietzke: Radiochim. Acta 1982, v. 31, 37. Y.-T. Chia: "Chemistry of +1 Iodine 1n Alkaline Solution", UCRL-8311, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (June 1958). Y. Marcus: J. Solution Chem. 1963, v. 12, 271. C.E. Vanderzee; M.E. Sprengel: J. Chem. Thermodynamics 1983, v. 15, 869. J.W. Cobble; R.C. Hurray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982). G.K. Johnson: J. Chem. Thermodynamics 1977, v. 9, 835. Private communication, April 10, 1984. P.G. Desideri; L. Lepri; D. Heimler: "Iodine and Astatine", in Encyclopedia of Electrochemistry of the Elements, v. 1, A. J. Bard (eo.), Marcel Dekker, Inc., New York (1972). H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data",Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.D. Magman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The N8S Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, John Wiley & Sons, Inc., New York (1980). CRC Handbook of Chemistry and Physics, R.C. Weast, Ed., CRC Press, Inc., Boca Raton. FL (1983). L.I. Katzin; E. Gebert: J. Am. Chem. Soc. 1955, v. 77, 5814. Encyclopedia of Chemical Technology, 3rd ed., v. 13, John Wiley & Sons, Inc., New York (1981). E.M. Woolley; J.O. Hill; W.K. Hannan; L. G. Hepler: J. Solution Chem. 1978, v. 7, 385. O.D. Bonner; P.R. Pricharo: J. Solution Chem. 1979, v. 8, 113. Private communication, April 1984.

17. W. Gordy; W.J.O. Thomas: J. Chew. Phys. 1956, u. 24, 439. 18. COOATA Task Group on Key Values for Thermodynamics: COOATA Recommended

Key Values for Thermodynamics 1977, COOATA Bulletin 28, COCATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April

19. J.F. Hinton; E.S. Amis: Chem. Rev. 1971, v. 71, 627. 20. M. Oavles; E. Gwynne: J. Am. Chem. Soc. 1952, v. 74, 2748. 21. A.J. deBethune; T.S. Llcht; N. Swendeman: J. Electrochem. Soc. 1959, v.

106, 616. 22. R.H. Stokes; L.A. Woolf; R. Mills: J. Phys. Chem. 1957, v.61, 1634. 23. K. Nakanishi; T. Ozasa: J. rhys. Chem. 1970, v. 74, 2956. 24. C.-H. Wu; M.M. Birky; L.G. Nepler: J. Phys. Chem. 1963, v. 67, 1202. 25. W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New

York (1979). 26. L.E. Trevorrow; G.F. Vandegrift; V.M. Kolba; M.J. Steindler: ANL-83-57,

Part I, Argonne National Laboratory, Argonne, IL (August 1983). 27. M. Kahn; J. Kleinberg: Radiochemistry of Iodine, NAS-NS-3062, Los Alamos

National Laboratory, Los Alamos, NM (September 1977). 28. K. Andersson; B. Allard: SKBF-KBS-TR-83-07, Chalmers University of

Technology, Goteborg, Sweden (1983). 29. Stanoard Methods for the Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. H.J. Ploainec; G.G. Wicks; N.E. Bibler: DP-1629, Savannah River

Laboratory, Aiken, SC 29808 (April 1982), p.32. 31. C.-C. Lin: J. Inorg. Nucl. Chem. 1981, v. 43, 3229. 32. H. Richard; V. Karg; T. Schonfeld: J. Radioanal. Nucl. Chem. 1984, v.

82, 81. 33. C.H. Li; C.F. White: J. Am. Chem. Soc. 1943, v. 65, 335.

34. F.J. Millero; O.R. Schreiber: Am J. Sci. 1982, v. 282, 1508. 35. T.L. Allen; R.M. Keefer: J. Am. Chem. Soc. 1955, v. 77, 2957. 36. R. Furuichi; I. Matsuzaki; R. S1mic; H.A. Liebhafsky: Inorg. Chem. 1972,

v. 11, 952. 37. 0. Haimovich; A. Treinin: J. Phys. Chem. 1967, v. 71, 1941. 38. C.-C.Lin: J. Inorg. Nucl. Chem. 1980, v. 42, 1093.

39. R.A. Rankin; F.A. Hohorst; R.A. Nielsen; E.E. FilDy; H.A. Emel: EMCO-1142, Exxon Nuclear Idaho Co, Inc; laaho Falls, lb 83401 (Sept 1983).

40. A. Roux; G.M. Musbaiiy; G. Perron; J.E. Desnoyers; P.P. Singh; E.M. Wool ley; L.G. Hepler: Can. J. Chem. 1978, v. 56, 24.

41. V.B. Parker: Private Communication, April 18, 1984. 42. E.M. Wooiley; L.G. Hepler: Can. J. Chem. 1977, v. 55, 158. 43. R.L. Benoit; M.F. Wilson; S.-Y. Lam: Can. J. Chem. 1977, v. 55, 792. 44. R.P. Bell; F.. Gelles: J. Chem. Soc. 1951, 2734. 45. L.G. Hepler: Private Communication, June 1984. 46. D «i. Palmer: Private Communication, July 1984. 47. This work S°(l205(s)) by analogy with AS2O5, SD2O5,

TagOs, P2O5 solids. 48. A. Finch; P.N. Gates; M.A. Jenkinson: J. Inorg. Nucl Chem. 1980, v. 42,

1506. 4S. C.F.V. Mason; J.D. Farr; M.G. Bowman: J. Inorg. Nucl. Chem. 1980, v. 42,

799. 50. G.K. Johnson; P.N. Smith; E.H. Appelman; W.N. Hubbard: Inorg. Chem.

1970, v. 9, 119. 51. R.M. Kren; H.W. Dodgen; C.J. Nyman: Inorg. Chem. 1968, v. 7, 446. 52. D.A. Palmer; R.W. Ramette; R.E. Mesmer: J. Solution Chem. 1984, v. 13,

673. 53. R.W. Ramette; D.A. Palmer: J. Solution Chem. 1984, v. 13, 637. 54. D.A. Palmer; R.W. Ramette; R.E. Mesmer: J. Solution Chem. 1984, v. 13,

685. 55. L.E. Topol: Inorg. Chem. 1968, v. 7, 451.

* igueoas * * Solutioms * * Database *

•OLUDlaOa •OITMUIS CC * M l Saptaabac 198«

BQUILIB8IUH RE1CIIOK: HoO«— * H+ * IHOOt-

IRBBBOCHEHICaL PBOPBITIES: "rHo, J «ol-1 18064 "SO, J BOl-1 K-1 • 141.00 "Cpo, J aol-1 K-1 Ay-z2,(kg aol-1) 1/2 : - 2.0U t, kg aol-1 0.29 log Ko «.20

BQUIIIBRIOB QOOIIEMTS: I ' i o n i c s t r a a g t h , a o l kg-1

I/T 25 C 0.00 4.20 0.01 4.02 0.10 3.7* 0.20 3.63 0.50 3.50 1.00 3.U7 2.00 3.58 3.00 3.78

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 1;2j3;15

COHHEHTS; Foe 1 = 0 . 1 : *rHo=20,000; "So=1»0. Foe 1=1.0: *tHo=22500; -so^u;.

•**•*•***•**• aoLYBDEjrua » Aqueous * HOLTBDATES * Solutioas * tc = H02 * Database * Septeabec 1984

EQOILIBBIOH GEACIIOH: HoOU— • 2H* * H2MO04 (aq)

THERHOCHBIUCAL P&GPEfiTIES:

rHo, J «ol-1 - 10500 So, J Bol-1 K-1 140.35 Cpo, J BOl-1 K-1 Ay-z2,{kg no 1-1) 1/2 . : - 3.06 b, kg «ol-1 0.09 log Ko 9.17

EQUILIBBIUH QUOTIENTS. I = i o n i c s t r e n g t h , aol kg-1

i / l 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 9.17 0.01 8.89 0.10 d.44 0.20 ti. 24

0.50 7.95 1.00 7.73 2.00 7.56 3.00 7.50

REPEHENCES: 1 ;2 ; J ;15

COHHEMTS:

* AgneoDE * * Solutioas * * Database * »*•»****»»»*•

EQUILIBBIOB BEiCTIOM: HoOU— 4- 3H* » UHoO**

•OLTBOEIOR •0LKBDATB5 CC » BOB Bovaabar 198*

IBEBNOCHEHICAL PBOPEBTIBS: "cBO, J BOl-1 " S o , 0 a o l - 1 K-1 " C p o , J BOl-1 K-1

A y ~ z 2 . (kg a o l - 1 > 1 /2 b , kg ao 1-1 l o g Ko

• 4500 135.30

l o g Q

I / T 25 C

0 .00 7 .83

0 . 0 1

0 . 10

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFEBEMCES: 5 ; 1 7

COflHEUTS: II3Ho04» i s e q u i v a l e n t t o Ho (OH) 5(1120) » .

* »q eous * * Solutions * * Database *

HOLTBDEIUH POLTH01YBDATBS tc = HOI 6 HoreubcE 1984

EJIJILIBBIOM REACTION; 2SO04— • 3H* « H3 (HoO») 2 -

THEBHOCHEHICAL PfiOPEBTIES:

"rHO, J BOl-1 " S o , J B O I - 1 K-1 "Cpo, J n o l - 1 K-1 Ay~z2,(kg sol-1) 1/2 : - 5-10 b, kg aol-1 log Ko : 15.86

EUDILIBHIUM QUOTIENTS: I = i o n i c s t r e n g t h , mol k g - 1

L/J 25 C

i.oo ii*. a*

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFEaENCES: 3;18.

COHHEHTS: HJ(MoOii)2- is equivalent to HHO207-.

•OLIBDIMOH POLrSOlIBBKIS rc * 803 Saptaaber 1980

EQPH.IBBIBH BEftCTIOH: 7H004-- * 8H* » Ho7024 *• 4H20

THEBHOCHEHICAL PBOPEHTIES: ~CHo, J aol-1 "So, J BOl-1 K-1 "Cpo, J aol-1 K-1 Ay"z2, (kg aol-1) 1/2 b, kg aol-1 log Ko

-193446 314.60 0.00

2.47 50.34

EijUILIBBloa QUOTI-EHTS: l = i o n i c s t r e a g t h , ao l kg-1

I/T 2S c 0.00 50.14 0.01 50.36 0.10 50.59 0.20 50.S3 0.50 51.57 1.00 52-81 2.00 55.28 3.00 57.74

50 C 75 C 100 C 150 C 200 C 250 C 300 C

8KFEBEHCES: 1;2;J;7;8 COHKEUTS: Proa Bet.3,8,9: ~cHo(I=3) -230538, -234304, -199000.

**»•#*«**•»** * Aqueous * * Solutions * * Database *

BOOILIBBIOH BEACTIOH: 7MO04— • 9H+ » H«o7024-

BOLYBDEHOa POLrflOLIBDATES TC = H04 September 1984

• 4H20

THE5«OCHBHICAL PBOPEBTIES:

r l lo , J e o l - 1 -199320 So, J a o l - 1 K-1 435 .64 Cpo, J n o l - 1 K-1 Ay"z2 , (kg a o l - 1 ) 1 / 2 - 6 .12 b, kg a o l - 1 2 .77 log Ko 57 .69

EQUILIBRIUM QUOTIENTS: I-ionic strength, »ol kg-1

log Q I/T 25 C 0.00 57.69 0.01 57.16 0. 10 56.49 0.20 56. 35 0.50 56.54 1.00 57. .19 2.00 59.64 J.00 o2. 10

50 C 75 C 100 C 150 C 200 C 250 C 300 C

KEFE8KNCES: 1 ; 2 ; 3 ; 7

COHflEKTS:

* Aqueous * * S o l u t i o n s * * D a t a b a s e *

HOLIBDIMOB POIIBOLTB&ATIS c c » 1 0 5 S s p t a a l w c 1984

EUUILIBBIUH BEACTIOB: 7 B 0 0 4 — * 1QH* ' H2flo7D24 • 4 1 2 0

THEBflOCHEtir.CAL PBOFEBTIES:

rHo, J «ol-1 : -208865 So, J aol-1 K-1 . 510.64 Cpo, J aol-1 K-1 Ay*z2, (kg aol-1) 1/2 . -11.22 b, kg aol-1 3.09 log Ko 63.54

EQUILIBBIUH QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

1/1 25 C

0 .00 63.5a

0 . 0 1 62 . bj

0 .10 61 .15

0 .20 6 0 . 6 9

0 .50 60 . >m

1.C0 b1 .02

2 .00 6 3 . 1 5

3 .00 65 .70

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFE--.-HCES: 1 ; 2 ; 3 ; 7

COHSEHTS: Froa Bef . 8 : " c H o ( I = 3 ) = - 2 1 3 8 0 2 .

HOLTBDEKUB POLKIIOLltBDATiiS EC « H06 S e p t e a b e r 1984

EQUIIIBBIUH BEiCTION: 7 B 0 0 1 - - t 11Ht > H3Ho7Q2« * 4H20

T11EHMOCHEHICAL PBOPEBTIES:

run • •-• i : -219750 . J ->. - : K - 1 556.64

v.pO, il ffl 1-1 K-1 i y " 2 2 , ( k j a o l - 1 ) 1/2 : - 1 5 . 3 0 o, kg a o l - 1 3.43 log Ko 67 .63

l o g Q

1 /T 25 C

0 .00 67 .63

0 .01 66 .27

0 .10 64 .30

0 .20 6 3 . 5 9

0 .50 63 .01

1.00 63 .40

2 . 0 0 65 .53

3.00 68 .20

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFEEENCES: 1;2;3;7

COMflEHir: H3Mo7024 is equivalent to H11(Mo04)7-

***••*••*••** •oLiasHiaa • AqUBOOS • POLIBOLIBa&TBS • solution* * re • BO17 • Database « lovnbw 1984

EQUIJ.IBBIOB REACTION: 7BO04— • 8H* - 18 (BO04) 7

TBEHBOCHBBICiL PROPERTIES! "cllo, J aol-1 "So, J aoi-1 K-1 "Cpo, J BOl-1 K-1 iy-z2, {kg aol-1) 1/2 b, kg aol-1 log Ko

0.00 2.47 50.31

BQOILIBBIUH QUOTIESTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 50.31 0.01 50.33 0.10 50.56 0.20 50.80 0.50 51.55 1.00 52.79 2.00 55.25 3.00 57. 7«

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 3;18. COMMENTS:

*•••••*•***•* MOI.rBDBKUM • Aqueous » POirHOlTBDATES • Solutions • re » 8018 • Database * loveabec 1984

EaUILIBBIUM flEACTIOHs 7MO04— • 9H* « B9 (No04)7

THEBHOCHEHICAL PHOPEBTIES: "rHo, J «ol-1 "So, J «ol-l K-1 "Cpo, J aol-1 K-1 Ay~z2. (kg aol-1) 1/2 b, kg aol~1 log Ko

- 6.12 2.77 57.71

EQUILIBBIUH QUOTIENTS: I-iooic strength, aol kg-1

log Q I / I 25 C

0.00 57.71

0.01 57.18

0.10 56.52

0.20 56.37

0.50 56.56

1.00 57.42

2.00 59.66

3.00 62.14

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEREMCES: 3 ; 18

COfMENTS:

• * * * • • • • • • • • • HCLIIOHDH • Aqueous * POIIHOLIBDATIS • S o l u t i o n s • c c • BO19 • Database * loTtifaar 1984

EQUILIBBIOt) BBACTION: 7HoO«-- f 10H* » H1C (HoOtt) 7--—•

THERflOCHEMCAL PBOPEBTIES:

* i a o , J « o i - i ~So„ J n o l - 1 K-1 "Cpo, J «o l -1 K-1

A y * z 2 , (kg s o l - 1 ) 1/2 b, kg a o l - 1 log Ko

- 1 1 - 2 2 3 .13 63.i»1

EQUIL1BBI0H QUOTIENTS: I ^ i o o i c s t r e n g t h , mol kg-1

I / T 25 C

0 .00 6 3 . 4 1

0 .01 62 .42

0 .10 61.03

0 .20 6 0 . 5 7

0 .50 60 .33

1.00 b 0 . 9 3

2 .00 63 .09

3 .00 6 5 . 6 8

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 3;1tj .

COHBEIIXS:

* Aqueous • * So lu t ions * * Database *

EQUILIBRIUM BEACTIOH: IHoOH— • 11H+ » H11(NoOt)7

THEBH0CHEHKA1 PBOPE8TIE5:

"cHo, J i o l - 1 : "So. J B O I - 1 K-1 : "Cpo. J nol -1 K-1 :

Ay"z2,;kg nol-1) 1/2 : - 1 5 . 3 0 b, kg nol-J : 3 .37 log Ko : 67.80

EQUILIBRIUM QUOTIENTS: l=ionic strength, aol kg-1

log a I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 67.B0

0 .01 66.ait

0 .10 64.46

0.20 63 .75

0.50 63 .^5

1.00 63.52

2 .00 65 .58

3.00 66 .21

HEFEBENCES: J ; 1 0 .

COflflENTS:

aoxrBDinaH POLrnOLIBDATES CC * HO20 Voveabec 1484

HOIiZWHOI P0LTBOLIBD4TES EC » H022 Io»«K! ar 1984

EQUILIBBIOtl BEACTIOB: 8HO04-- * 9H* * H9(H004)8

THEBHOCHBHILAL PBOPBflTIES: "tflo, J »o l -1 "So, J ao l -1 K-1 *cpo, J ao l -1 K-1

Ay~z2, (kg nol -1) 1/2 h, kg ao l -1 log Ko

EQDILIBBIOB QUOTIENTS: l=ionic strength, aol kg-1

log Q I/T 25 C 0.00 0.01 0.10 0.20 0.50 1.00 59.46 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300

BEFEBBNCES: 3;18. COMMENTS: Assuned Davies equation valid up to 1=1.00; estimated

uncertainty iQ log Ko is 3 units of log Ko.

* Iq aeons * * Solutions * * Database *

HOLrBDEMUH POLINOUT BOAT ES rc = So21 Voveabsr 1984

EQUILIBRIUM REACTION": BUoOH— • 12H* * H12(SoOi»)8

THEBKOCHEalCAL PROPERTIES:

~rHo , J mo l -1 " S o , J m o l - 1 K-1 ' C p o , J i o l - 1 K-1

Ay"z2, (kg a o l - 1 ) 1/2 b, kg a o l - 1 l o g Ko

-1U.28

7« .43

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / I 25 C

0 . 0 0

1.00 71 .57

j . 0 0

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFERENCES: 3 ; 1 8 .

COMMENTS: log Ko calculated by assuaing validity of Davies equation at 1=1.00; uncertainty estimated at i units ot log Ko.

HOLIBDMtUH rOLtaOLTBOUIS TC * MOIS *ov«ab«r 198t

BQUZLIBBIUH REACTIOH; SfloOU— * 12H* » H08026 • 6H20

THERNOCHEHICAL PROPERTIES: THo, J «ol-1 : -216000 "So, J «ol-1 K-1 "Cpo, J aol-1 K-1 Ay"z2,(kg »ol-1) 1/2 ; -14.28 b, kg «ol-1 log Ko : 7«.70

EQUILIBRIUM OUOT:SKTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 7K.70 0.01 0.10 0.20 0.50 1.00 71.70 2.00 i. 00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

RBFEHENCES: 3;¥;17 COfMEUTS: from lief. 9 : "rHo = -216000 .

•*•»•*»*»••*• HOLXBOBMOn * Aqueous * HOLYBDATES * S o l u t i o n s * re = B02B * D a t a b a s e * l ioveaber 1984

EQUILIBRIUM REACT ION: HO04— * 2H+ • 2H20 = Ho(OH)6(ag)

THEBNOCHEIUCAL PBOPERTIES:

rHo, J aol-1 : - 31190 So, J aol-1 K-1 54.18 Cpo, J aol-1 K-1 Ay~z2,(kg aol-1) 1/2 - 3.06 b, kg aol-1 0.30 log Ko 8.54

EQUILIBRIUM Q U O T I E N T S ; l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C

0.00 8. 54

0.01 8.26

0. 10 7.8.1

0.20 7.65

0.50 7.42

1.00 7.31

2.00 7.35

3.00 7.50

50 C 75 C 100 C 150 C 200 C 250 C 300 C

RiiPfcRENCES:

COMMENTS:

»«»»**»•»•»•• BOLIBDEBUB * aqueous * BOMBDaTES * S o l u t i o n s * cc * B09 * Database * flovaaber 1984

EQOIiXBHIUB EE1CTIOM: BBoOH- • B* • 2H20 > BO(OH)6(ag)

TBEBHOCBEBIC4L PROPEBT1ES: CHO, J BOl-1 : - »9255 So, J aol-1 K-1 : - 89.00 Cpo, J aol-1 K-1 ay-v.2, (kg aol-1) 1/2 : - 1.02 b, kg ao 1-1 0.27 log Ko 3.98

EQUILIBHIOH Q0O1IEHTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 3.98 0.01 3.89 0.10 3.76 0.20 3.72 0.50 3.69 1.00 3.7a 2.00 3.92 J.00 <*. 1U

5 0 C 75 C 100 C 150 C 200 C 250 C 300 C

REPEHEHCES: 5;6 COMMENTS: *rHo(I = l) = -46500; *So(I=1) = -85.

* Atjueous * * So lu t ions * * D a t a b a s e *

MOLYBDENUM M01IBDA1ES r c = N02J Voveabec t98<t

tUUILIBBIUH BE1CTI0H: H004— * JH* * 21120 = No (OH) 5 (H20) •

THERSOCHEMICM. PROPEBTIES:

"CHO, J l iOl-1 *So, J mol-1 K-1 "Cpo, J n o l - 1 K-1 Ay"i2, (kg «ol-1) 1/2 b, kg aol-1 log Ko

24115 94.18

EQUILIBBIOH QUOTIEMIS: I=ionic strength, iol kg-1

1/1 25 C

0 .00 9.03

1.U0 8.27

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFJiI(JiNCES: 5 ; 1 7 .

C0HC1J2HTS: Ro (OH) 5 (rf20) • i s e q u i v a l e n t t o «3(to04+.

•**•*•*•***** aOLTBDiaOH • lyueoas * HOLIBOAIES • Solutions * re ' 1010 • Database » *ov«ab«c 1984

EQOILIBBIOH BEACTIOH: HO (OH) 6 ( ag ) • H» » Ho (OH) 5 (H20) •

TBEBHOCHEfllCM. PROPERTIES:

rHo, J aol-1 : 7074 So, J nol-1 K-1 40.00 Cpo, J sol-1 K-1 Ay*z2, (kg »ol-1) 1/2 0.00 b, kg nol-1 0.06 log Ko 0.85

I/T 25 C 0.00 0.85

0.01 0.85

0. 10 0.86

0.20 0.86

0.50 0.88

1.00 0.91

2.00 0.97

j.00 1.03

50 C 75 C 100 C 150 C 200 C 250 C J00 C

REFERENCES; 5;6

COflBENIS; For 1=3: "rHo = 6000; "So = 40.

***•»*»*•**** HOLTBDEHOH * Agueous * NOLYBDATES » solutions * rc = 8030 * Database * Hoveabec 1984

GQOILXBBIUM BEACTION: no04— «• H» » 2H20 » flOO (OH) 5-

THEHflOCHEHICAL tBOPEETIES: * c H o , J BOl-1 " S o , J a o l - 1 K-1 " C p o , J a o l - 1 K-1 Ay*z2, (kg aol-1) 1/2 b, kg BO1-1 log Ko

18060 141.00

EQUILIEBIU.1 QUOTIENTS: I = i o n i c s t r e n g t h , a a l k g - 1

l o g Q

0 . 0 0

0 . 0 1

0 . 10

u . 2 0

0 . 5 0

1 . 0 0

2 . 0 0

J . 0 0

4 . 2 0

50 C 75 C 100 C 150 C 200 C 2 5 0 C 3 0 0 C

3 . 7 1

KKFEKENCES: Thi t . work.

coflMENTS: MoO(Oil)5- i s e q u i v a l e n t t o HHO04-

EQUILIBRIUM REACTION: 2HNO03+ * B2No206»»

OiaERS rc * B011 lotaabec 1984

1UERHOCUEHICAL PBOPEBTIES: "riio, J ao l -1 "So, J ao l -1 K-1 "Cpo, J a o l - 1 K-1 Ay"z2, {kg •ol-1) 1/2 b, kg aol-1 log Ko

EQ.UIHBSIUH QUOTIENTS: I=ionic strength, aol kg-1

log Q I/T 0.00 3.01 0.10 0.20 0.50 1.00 2.00 J.00

25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

DEFERENCES: 11;17. COHHENTS:

* Aqueous » * Solutions * * Database *

BQQILIBGIDH REACTIOH: HHO206+ • B+ = B2Ho206»+

MOLYBDENUM DIBEBS rc = HOI 2 No»e«ber 1984

IHEBMOCHEMICAL PBOPERIIES:

"rHo, J nol-1 "So, J BOl-1 K-l ~Cpo, J BOl-t K-1 Ay*z2,(kg aol-1) 1/2 b, kg no 1- 1 log Ko

EQUILIBRIUM QUOTIENTS: I - i o n i c s t r e n g t h , c o l k g - 1

l o g Q

I / T 25 C

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEBENCES: 1 1 .

COSMEStS:

* igueous * * S o l u t i o n s * * D a t a b a s e *

EQDIUBBZUH B E i C T I O l : H2i1o206*+ • H* =* H3Ho206++»

1HEBH0CHESIC1L PHOPEHTIES:

" r H o , J « o l - 1 : " S o , J « o l - 1 K-1 : " C p o , J m o l - 1 K-1 :

A y ~ z 2 , ( k g « o l - 1 ) 1/2 : b , k g n o l - 1 : l o g Ko :

EQUILIBBIUa QUOTIENTS: I=ionic strength, aol kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

3.00 - 0.62

BEFEKENCES: 1 1 .

flOLIBDXIOH DIBIBS CC « HOI 3 MOT«"b«r 198K

COHHEHTS:

* Agueous * » So lu t ions * * Database *

HOLTBDEMUM DINERS rc = H031 November 1984

EQOILIBBIOH HEACTIOH: 2SO(0H) 5(H20) • = Mo20 (OH) 8 <H20) 2** • H20

THEBBOCHEMIC4L PBOPEBTIES: * r H o , J mo l -1 " S o , J BOl-1 K-1 "Cpo, J n o l - 1 K-1

» y " z 2 , < k g mol -1) 1 /2 b , kg a o l - 1 l o g Ko 1 . 9 9

EQUILIBBIUM QUOTJENTS: I = i o n i c s t r e n g t h , « o l k g - 1

log Q I / T 25 C

0 .00 1.99

0 . 0 1

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEBENCES: 11. CONHENTS:

HOI7BDBIUH a i H M S c c » H032 • o v e a b e c 198*)

E20ILIBBIUH BEACTIOH: Ho20 (OH) 9 (H20) • • H* =« BO20(0H) 8 (H20) 2+*

THEBHOCBEalCAL PBOPSBIIBS:

"tHO, J Bol-1 "So, J nol-1 K-1 ~Cpo, J DOI-1 K-1 Ay*z2, (kg eol-1) 1/2 b, kg »ol-1 log Ko 0.67

EQUILIBRIUM QUOTIENTS: l=ionic .. vength, aol kg-1

log Q 1/1 25 C 0.00 0.67 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEfEBENCES: 11. C0.11ENTS:

**4l**» ******* * Aqueous * * Solutions * * Database • *************

flOLTBDEMOH DIflEHS EC = H033 Koreabee 1984

EQUILIBRIUM BEACTIOK: Mo20(OH) 8(iJ20) 2»+ • H* « Bo20 (OH) 7 (H20) 3*t*

THEBHOCHEHICAL PKOPEETIES: "THo, J »ol-1 "So, J nol-l K-1 ~Cpo, J aol-1 K-1 Ay*z2, (kg aol-1) 1/2 b, kg «ol-1 log Ko 0.62

EQUILIB8IUM guoiIENTS: l-ionic sttengtfa, aol kg-1

log Q I/I 25 C 0.00 - 0.62 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFERENCES: 11. COMMENTS:

************* * Aqueous * * Solutions * * Database * **********</** EQDILIBRIDB KBACTiOH: Mo702t-

HOLIBBIIOa POX.IR01TBBAIBS EC » 8026 ROTClbac 1984

• H* HHo702»-

THEBflOCHElUCAL PBCPEBTIESs

* r H o , J a o l - 1 : - 5875 " S o , J « o l - 1 K-1 : 121.00 "Cpo , J « o l - 1 K-1

Ay*z2, (kg aol -1) 1/2 b, kg ao l -1 log Ko : 7 .35

EQUILIBBIUH QUOTIENTS: I = i o n i c s t r e n g t h , aol kg-1

log Q I / T 25 C

0.00 7.35

3 .00 u. m

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEPBBENCES: 1 COHBENTS: From Bef. 1: "rHo(I=3) = 10878; ~rSo(I=3) = 121.

* igneous • * solutions • * Database *

EQUIIIBBIDH BEaCTIOH: BNO7024-

HOLrBDEBOH POtmOLTBDATES rc = B025 •oveaber 1984

* H* * H2HO7021

THEEHOCHEHIC»L PBOPEBTIES: "CHO, J lOl-l "So, J «ol-1 K-1 "Cpo, J nol-1 lf-1 Ay"z2, (kg aol-1) 1/2 b, kg no1-1 log Ko

9545 75.00

EQOILIBBIua QUOTIENTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 5.85 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

RKFEHEHCES: 1 COMHEKTS: Fcon Re£. 1: *rHo(JC=3) = 3317; "rSo<I=3) = 79.5.

NOlIBDiaOH POLIHOLIBDAIBS rc * 8027 O c t o b e r 198*

BQDILIBHIUH BEACTIOK: H2Ho7024 • fit « H3HO7024

THERHOCRBHICAL PBOPEBTIES:

*rHO, J BOl-1 " S o , J BOl-1 K-1 ~Cpo, J B o l - 1 K-1

4 y ~ z 2 , (kg » o l - 1 ) 1 /2 b, kg «o1-1 log Ko

10826 42.00

EQUILIBBIUH QUOTIENTS: I = i o a i c s t r e n g t h , B o l k g - 1

log Q I / T 25 C

0 .00 4 .09

3.00 2 .62

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFERENCES: 1. COHHENTS: From Kef. 1: "rHo(I=3) = -2510; "rSo(I=J) = 41.8.

*»•**»*•***** * Ay ueous * * So lut ions » * D a t a b a s e *

EQUIIIBBIUB BE ACTIOS: (107024-

HOLYBDBIIUK POJ-lfMOLTBDiTES r e = H023 Ko»e»ber 1984

* 80H- 7HO04— • 4H20

THEBHOCHEMCAL PBOPEBTIES:

"rHo, J i o l - 1 : -252995 "So, J a o l - 1 K-1 "Cpo, J iuol-1 K-1

Ay"z2 , (kg mol-1) 1/2 b , kg o o l - 1 l o g Ko : 61.61

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , e o l k g - 1

l o g a

I / T 25 C

O.QO 6 1 . 6 1

0 . 0 1

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEHENCES: 8 .

COMMENTS:

************* * Aqueous * * solutions * * Database *

BaOILIBBIUH REACTION; 7H8o8026 • 110H- = 8H2BO7024-

HOLIBDBI0H POtTBOLIBDATES re » B024 Mavaab«c 1984

» H20

THBRHOCHEHICAL PBOPEBTIES:

"rHo, J n o l - 1 " S o , J » o l - 1 K-1 "Cpo, J BOl-1 K-1

A y " z 2 , (Jcg « o l - 1 ) 1 /2 b , kg R o l - 1 l o g Ko

EQUILIBBIUM QUOTIfiNTS: I = i o n i c s t r e n g t h , i o l k g - 1

log Q I/T 25 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEFEfiEKCES: 8. COMMENTS: "rHo(I = 1) -515«70 (Hef.8).

* Igneous • * Solutions * * Database *

HOtrbDEHUH BOLXBDATES re = B014 November 1984

EQDILIBBIDM HEACTIOS: HUMO8026 (aq) • 3CH- ~ H3O8026 • 3H20

IHEHBOCHEMICAL PEOPiiBTIES: "rHo, J mol-1 "SO, J BOl-1 K-1 "Cpo, J no 1-1 K-1 Ay*z2, (kg aol-1) 1/2 b, kg nol-1 log Ko

-16H431

EeUILIBBIDH QUOTIENTS: I = i o n i c s t r e n g t h , s o l kg-1

I / T 25 C

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFEHENCES: 8 .

COMMENTS: " r H o <I=1J = - 1 6 U U 3 1 .

* « * * « * * « * * * * • * Aqueous * * solutions * » Database »

EOUILIBBIUfl BEACTIOH: HoOD— * 2B> » Ho03 ( s ) • H20

BOL1BDBIUH OXIDES rc •* 807 Sept«aber 1981

THEBHOCHEHICAL PEOPEETIES:

"rHo, J BOI-1 : - 33920 "So, J «ol-1 K-1 : 109.65 ~Cpo, J nol-1 X-1 : 459.87 *jr~z2, (kg BOl-1) 1/2 b, kg BO 1-1 log Ko : 11.67

EQUXLIBRIOS QUOTIEHTS: I=ionic strength, BOI kg-1

log Q 1/1 25 ̂ 0.00 11.67 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 11.29

75 C 11.09

100 C 11.04

150 C 11.23

200 C 1«.68

250 C 12.29

300 C 12.99

REFERENCES: 1;16 COSHEHTS: From Bef. 9: "cHo = -31700.

MOLYBDENUM References June 1984

C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations; John Wiley & Sons, Inc., Mew York (1976). I.Del lien; F.M. Hall; L.G. Hepler: Chen; Rev. 1976, v. 76, 283. J.J. Cruywagen: Inorg. Chem. 1980, v. 19, 552. D.D. Waoman; H.H. Evans; V.B. Parker; R.H. Schuimi; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. J.J. Cruywagen; J.B.B. Heyns; E.F.C.H. Rohwer: J. Inorg. Nucl. Chem. 1976, v. 38, 2033. J.J. Cruywagen; E.F.C.H. Rohwer: Inorg. Chem. 1975, v. 14, 3136. J. Aveston; £.W. Anacker; J.S. Johnson: Inorg. Chem. 1964, v. 3, 735. N. Kiba; T. Takeuchi: J. Inorg. Nucl. Chem. 1974, v. 36, 847. N.D. Jespersen: J. Inorg. Nucl. Chem. 1973, v. 35, 3873. N. Kiba; T. Takeuchi: J. Inorg. Nucl. Chem. 1975, v. 37, 159. J.J. Cruywagen; J.B.B. Heyns; E.F.C.H. Rohwer: J. Inorg. Nucl. Chem. 1978, v. 40, 53. S. Crouch-Baker; P.G. Dickens: J. Chem Thermodynamics 1984, v. 16, 301. L.M. Khriplovich; I.E. Paukov: J, Chem. Thermodynamics 1983, v. 15, 333. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data",Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochim. Acta 1981, v. 45, 855. H. Inaba; K. Miyahara; K. Naito: J. Chem. Thermodynamics 1984, v. 16, 643. J.O. Cruywagen: Private Communication, September 25, 1984. Y. Sasaki; L.G. Sillen: Acta Chem. Scand 1964, v. 18, 1014. J.F. Ojo; R.S. Taylor; A.G. Sykes: J.C.S. Dalton 1975, 500.

* * * * * * * * * * * * * NEPTtlalUH * Aqueous * HXDBOEIDES * Solutions * cc * BP1 * Database * Septeaber 1984

EaOILIBBIUH REACTION: Bp02*» • H20 - Bp020H* + H»

THEBNOCBEBICfcL PBOSEBTIES:

"rf lo , J a o l - 1 : 4 3 1 3 9 " S o , J a o l - 1 K-1 : 4 6 . 9 9 "Cpo, J a o i - 1 K-1 : - 2 1 . 2 9

H y * z 2 , { k g a o l - 1 ) 1 / 2 : - 1 . 0 2 b, kg a o l - 1 : 1 . 7 4 l o g Ko : - 5 . 1 5

EQIULIBRIUH QOOTIESTS: I = i o o i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 3 00 C 0.00 - 5.15 - 4.57 - 4.07 - 3.65 - 2.97 - 2.44 - 2.03 - 1.69 0.01 - 5.23

0.10 - 5.22

0.20 - 5.12

0.50 - 4.70

1.00 - 3.92

2.00 - 2.27

3.00 - 0.58

BEFEBENCES: 3;6;7

COMMENTS:

• Agueous * • Solutions * • Database *

MEPTU1IIUH HIDROXIDES rc = HP2 Septeaber 1984

EQOILIBBIOH BKACTION: 2B>02*+ • 2 H20 » (Mp02) 2 (OH) 2** * 2B*

THEBBOCHBHICAL PBOPERTIES: "rHo, J aol-1 "So, J a o l - 1 K-1 "Cpo, J ao l -1 K-1 Ay*z2. (kg aol-1) 1/2 b, kg aol-1 log Ko

45620 31.98

- 232.58 - 1.02 0.01

- 6.39

EQUILIBRIUM CDOTIEBTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 - 6.39 0.01 - 6.48 0.10 - 6.63 0.20 - 6.70 0.50 - 6.81 1.00 - 6.89 2.00 - 6.97 3.00 - 7.01

50 C 75 C -5.73 - 5.29

100 C 150 C 200 C 250 C 300 C - 4.96 - 4.54 - 4.34 - 4.28 - 4.33

REFERENCES: 3;b;7 C0MHEN1S:

• Aqueous * • solutions * • Database *

aspTonoa HTDSOXIDES

r,cpt»»bec 198*

EUOILIBBIOM BEiCTIOS: 3Np02+* • 5R20 • ( » p 0 2 ) 3 (OH)5* * SHt

THEBHOCHENIC1L PROPERTIES:

"rHo, J i o l - 1 : 113396 "So, J » o l - 1 K-1 : 4 5 . 1 5 "Cpo, J u o l - 1 K-1 : - 3 9 0 . U S

A y " z 2 , ( k g n o l - 1 ) 1 /2 i - 3 . 0 7 b, kg a o l - 1 s 0 . 1 7 l o g Ko : - 1 7 . 4 9

EQUILIBBIOH QUOTIENTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/I 25 C 50 C 75 C 100 C 150 C 200 C 0.00 -17.49 -16.03 -14.89 -13.99 -12.75 -12.03 0.01 -17.77 0.10 -18.21 0.20 -18.40 0.50 -18.68 1.00 -18.86 2.00 -18.95 3.00 -18.93

250 C 300 C

- 1 1 . 6 6 - 1 1 . 5 2

REFERENCES: 3;6;7 CONHEHTS:

»*»*•*»****•• HEPTOMIBH * Aqueous • HIOBOXIDES * Solut ions * re * HP« * Database * September 198*

EGBILIBBIUH BEiCTION: Hp02* • H20 = Kp02Ofl(ag) • H*

THEBSOCHEH1C4L PBOPEBTIES:

"rHo, J s o l - 1 "So, J «o1-1 K-1 "Cpo, J ao i -1 K-1

Ay~z2, (kg aol-1) 1/2 b, kg • o l - t log Ko

«33«0 - 24.01 - 176.00

0.00 -0.2H - 8.87

EQ0IHB8IUM QUOTIENTS: I=ion?c s t r e n g t h , «o l kg-1

1/1 25 C 0.00 - 8.87 0.01 - 8.87 0. 10 - 8.89 0.20 - 8.92 0.50 - 8.99 1.00 - 9.11 2.00 - 9.35 3.00 - 9.59

50 C 75 C - 8.29 - 7.86

100 C 150 C 200 C 250 C 300 C - 7.53 - 7.11 - 6.89 - 6.80 - 6.80

************* HEPHFMOH * Agueoas * HIDIOXIDES » Solution? * cc * »P5 * Database * Sspteabcc 1984

EQOILIBBIOH BEACTIOH: Hp+*«-+ • H20 » lpOH++* • H*

TUEBHOCBEHICAL PROPERTIES:

" r f l o , J » a l - 1 " S o , J « o l - 1 K-1 * C p o , J « o l - 1 K-1

A y " z 2 , ( k g « o l - 1 ) 1/2 b , leg » o l - 1 l o g Ko

U4770 1 2 2 . 1 9

- 38.29 - 3.07

0.12 - 1 .46

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / I 25 C 50 ; 75 C 100 C n;o c 200 C 250 C 300 C

o.oo - 1.46 - 0.86 - 0.36 0.07 0.75 1.26 1.65 1.96

0.01 - 1.74

0.10 - 2. 19

0.20 - 2.38

0.50 - 2.67 1.00 - 2.88

2.00 - 3.02

3.00 - 3.05

BEFEREHCES: l ; J ; 6 ; 7

COHflENTS:

************* * Aqueous * * So lut ions * * D a t a b a s e * ************* EQUlLIDBIUa BEACTIOH: Mp02*» • F- » Hp02F+

HEPTONIOM FLDOBIDBS r e - JIP6 S e p t e a b e c 1984

SHEBHOCHEHICAL PBOPERTIES:

"rHo, J a o l - 1 : 4 2 3 4 " S o , J a o l - 1 K-1 s 9 2 . 0 8 ~Cpo, J mo l -1 K-1 : 1 9 8 . 0 0

A y ~ z 2 , (kg ao 1-1) 1 /2 : - 2 . 0 5 b , kg n o l - 1 : 0 . 4 3 l o g Ko : 4 . 0 7

l o g Q

1/1 25 C fi) C 75 C 10& C 150 C 200 C 250 C 300 C 0.00 4.07 4.16 4.29 4.46 4.85 5.29 5.75 6.22 0.01 3.89 0.10 3.62 0.20 3.52 0.50 3.43 1.00 3.47 2.00 3.73 3.00 4.06

BEFEBENCES: 7 ; 1 7

COMMENTS:

* * * * • * * » * * » * • KEPTOnOS * Aqueous * FLUORIDES * s o l u t i o n s * r e » «P7 ' * D a t a b a s e • S « p t « a b t c 198*

EQUIUBBIU8 REACTION: Hp02 + + • 21- « Np02F2(ag)

THEBHOCHEMICAL PBOPEBTIBS:

~ r H o , J « o l - 1 : 3 5 6 3 "So, J « o l - 1 K-1 : 159.26 "Cpo, J a o l - 1 K-1 : 0 - 0 0

A y " z 2 , (kg n o l - 1 ) 1/2 : - 3 . 0 7 b , kg B O 1 - 1 i 0 . 9 3 l o g Ko : 7 . 7 0

EQDILIBBIOH QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g 2

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 7.70 7.78 7.92 8.10 8.55 9.05 9.58 10.11 0.01 7. «3 0. 10 7.06 0.20 6.9U 0.50 6.89 1.00 7.10 2.00 7.76 3.00 8.5U

HEFE^ENCES: 7 ; 1 7

COMMENTS:

* Aqueous ^ * Solutions • * Database *

BEPTOMOH FLOOBIDES CC = SP8 September 1981

EQDILIBRIDH BEACTION: Np02+ * F- = Hp02F(aq)

THEHBOCHENICfiL PBOPEBTIES: "rHo, J nol-1 : 34725 "So, J Bol-1 K-1 : 134.C8 ~Cpo, J «ol-1 K-1 : 112.00 Ay"z2,<kg BO 1-1) 1/2 : - 1-02 b, kg no 1-1 : log Ko : 0.92

EQUIL1BBIU.1 QUOTIENTS: I=ionic strength, »ol kg-1

log Q 1/1 25 C 9.00 U.92 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 1.41

75 C 100 C 1.86 2.28

1U0 C 3.04

200 C 3.71

250 C 3 00 C

REFEBENCES: 17 COMMENTS:

• f t * * * * * * * * * * * * .tgueous * * s o l u t i o n s * * Database •

EQOILIBBinH REACTIOH: Up**** • F- » HpF***

• BPTOHUH FL0OBIDES CC » 1P9 Saptaabar 19e«

THEBHOCHEBICAL PROPEBTIES:

~rHo, J aol -1 : 3180 "SO, J a o l - 1 K-1 J 155.42 "Cpo, J a o l - 1 K-1 : 157.00

Ay-z2,(kg aol -1) 1/2 : - 4 .08 b, kg aol-1 : log Ko : 7 .55

EQOILIBIilOB QUOTIENTS: I=ioni.c s t r e n g t h , » o l kg-1

I/T 25 C

0.00 7.55

250 C 300 C

EEFEBENCES: 1;5

COBHEHTS:

************* * Ayueous * * Solutions * * Database * ************* EQOILIBHIOH REACTION: Np02*+ • CI- = Np02Cl*

HEPIDIiaa CHLOBIDES rc = HS10 September 1984

TH2BH0CHEHICAL PBOCEBTIES:

~rHo, J n o l - 1 " S o , J a o l - 1 K-1 "Cpo, J « o l - 1 K-1

A y " z 2 , (kg « o l - 1 ) 1 /2 b, kg a o l - 1 l o g Ko

12502 36-17 548.00

- 2.05 0.26

- 0.30

EQUILIBRIUM QUOTIENTS: l=ionic stcength, aol kg-1

log Q I / T 25 C 50 C 75 C 100 C 150 C 200 C

0 .00 - 0.30 - 0 .04 0.34 0 .81 1.91 3.14

0 . 0 1 - 0.1*8

0 .10 - 0.77

0 .20 - 0.88

0.50 - 1.02

1.00 - 1.07

2 .00 - 0.98

3 .00 - 0.82

250 C 300 C

REFERENCES: 7 COMMENTS:

* Aqueous * » Solutions * * Database *

EUDILIBBI0.1 REACTION; Hp02+ + CI- * Np02Cl<aq)

HEPiamoH CHLORIDES r c - »PJ1 September 198*

THEBHOCHEHXCAL PROPERTIES: ~ r H o # J n o l - 1 " S o , J B O 1 - 1 K-1 "Cpo, J DO 1-1 K-1

A y ~ z 2 , (kg « o l - 1 ) 1 /2 : 1 . 0 2 b , kg « o 1 - 1 l o g Ko : - 0 . 4 0

ECUILIBHIUM QUOTIENTS: I = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

I / T 25 C

0 . 0 0 - 0 . « 0

0 . 0 1

50 C 75 C 100 C

200 C 250 C 300 C

0 . 38

8EFEEENCES: 1 7

COHHENTS:

* * « * • * • * * • * • * » Agueous * * So lut ions * * D a t a b a s e * ************* EQtJH.IB8HfH REACTION: Hp+**+ • C I - = NpCl»*«-

HEPTUMIOH CHLOBIDES re = MP12 September 1984

THEHMOCHEHICAL PROPERTIES: "cHo, J n o l - 1 " S o , J n o l - 1 K-1 "Cpo, J mol -1 K-1

A y " z 2 , (kg i i o l - l ) 1 /2 b , kg » o l - 1 l o g Ko

19705 7 2 . 3 7 4 5 4 . 0 0 U.08

EQUTLIBBIOM QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

0 . 0 0 0 . 3 3

0 . 6 7

1 . 0 9

250 C 300 C

REFERENCES: 17

COMflENTS:

* Aqueous * * Solntions * * Database *

HEPTomua S01FATES re = HP 13 September 1984

EQOIJLIBBIUH BEACTION: Np02** • SOU— * Mp02S04 (ag)

HOCHEHICAL PBOPEBTIES

rHo, J nol-1 20409 So, J aol-1 K-1 131.07 Cpo. •: aol-1 K-1 627.00 Ay"z2,(kg aol-1) 1/2 . - 1.09 b, kg aol-1 -0.38 log Ko : 3.28

EQUILIBRIUM QUOTIENTS: I = i o o i c s t r e n g t h , aol kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C

0.00 3.28 3.65 4.15 4.75 6.11 7.60

0.01 2.90

0. 10 2.26

0.20 1.94

0.50 1„!|0

1.00 0.86

2.00 0.12

3.00 - 0.45

250 C 300 C

BEFEKEUCES: 7s17

COHHENTSi

•****•*•**•** » Aqueous * * Solutions * * Database * ************* EUUILIBRIUH REACTION: Hp02+ • S04- Bp02S04-

NEPTUMiaM SOLFATES EC = «PT» S e p t e m b e r 1981

THEBMOCHEHICAL PROPERTIES:

~ r H o , J B O I - 1 : 2 0 9 0 8 "So, J n o l - 1 K-1 : 72 .07 " C p o , J BOl-1 K-1 : - 9 5 . 0 0

Ay~z2,{kg no l -1 ) 1/2 : - 2 . 0 * b, kg B O I - 1 : 0 . 41 log Ko : 0 .10

EOUILIBBIUH QUOTIENTS: l=ionic strength, BOI kg-1

log Q I / T 25 C 50 C 75 C 100 C 150 C 200 C

0.00 0 .10 0.37 0 .57 0.72 0 . 9 1 1.00

0 . 0 1 - 0 .08

0 .10 - 0 .35

0 .20 - 0.4i*

0 .50 - o.5a

1.00 - 0 .51

2 .00 - 0 .27

3.00 0 .04

250 C 300 C

B.SFEHENCBS: 4 ; 1 7

COMMENTS:

» Aqueous * * Solutions * * Database *

lEPTUIIOi! SULFITES re * »P15 September 198*

EQI/ILIBBIOM BEACIIOH: Hp**** • S 0 4 - - = HpS04**

THERMOCHEHICM. PBOPEBTIES:

"cHo, J «ol -1 ; 20910 "So, J « o l - 1 K-1 : 175-27 ~Cpo, J «o l -1 K-1 : 401.00

Ay"z2,(kg mol-1) 1/2 : - 8-16 b, kg B O I - 1 : 0.34 log Ko : 5 .49

EQUILIBBIUK Q0OTIENTS: I = i o n i c s t r e n g t h , »o l kg-1

I / T 25 C 50 C 75 C 100 C 150 C 200 C

0 .00 5 .49 5 .84 6 .26 6 .72 7 . 7 3 8 .79

0 . 0 1 4 .75

0 .10 3 .56

0 .20 3 .04

0 .50 2 .28

1.00 1.75

2 .00 1.39

3 .00 1.34

250 C 300 C

HEFEBENCES: 4;7;1>7 COHHENTS:

HEPTDIIOB CARBONATES re = KP16 September 1134

EQUIlIBfilUM BEACTION: Np02t* «• C03-- = HPC2C03(aq)

THEBaOCHEfllCAL PfiOPEBTIES: * r H o , J a o l - 1 "So, J a o l - 1 K-1 "Cpo, J l o l - l K-1

Ay~z2, (kg « o l - 1 ) T/2 b, kg no l -1 log Ko

- <W08

EQUILIBBIUM QDOTIENTS: I = i o n i c s t r e n g t h , .noi Kg-1

I/I 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

REFEBENCES: C08NENTS:

»*»•*•»•»•»•» * Aqueous * * Solutions * * Database *

EQUILI8BI0H HE1CTION: Hp02+* • 2C03--

Hirauiioa CAtBOHTBS. cc « MP20 Hovaabar 1SS*

Mp02(C03)2 -

THEBHOCHEHICAI. PBOPEfiTIES:

" rHo , J BOl-1 " S o , J BO l -1 K-1 "Cpo, J BOl -1 K-1

Ay~z2 , ( kg BO 1-1) 1/2 b , leg a o l - 1 l o g Ko

30830 376 .70

212 .00

1«.27

EQUILIBRIUM QUOTIENTS: l=ionic strength, BOI kg-1

log Q I/T 25 C 0.00 14.27 0.01 0.10 0.20 0.50 1.00 16.51 2.00 3.00

50 C 14.73

75 C 15.18

100 C 15.62

150 C 16.48

200 C 17.29

250 C 300 C

REFERENCES: 18. COHUENTS:

• * * * * • * • * • * • * HBPTOmtHl * Aqueous * CA8BOHATES * Solutions * re * HP17 * Database * Septenber 198" ************* EOOILIBBIOH BEACTIOH: Np02*» «• 3C03— = Np02(C03)3

THBHHOCHEtUCAL PBOPEBTIES:

"rHo, J i o l - 1 : - 3 3 2 0 0 " S o , J a o l - 1 K-J : 2 7 5 . 6 0 ~Cpo, J a o l - 1 K-1 : 1 0 3 0 . 0 0

A y ~ z 2 , (kg » o l - 1 ) 1 /2 : 0 - 0 8 b , kg no 1-1 : l o g Ko : 2 0 . 2 1

l o g Q

I / T 25 C

0 .00 20 .21

0 . 0 1

0 . 5 0

1.00 20 .20

1 9 . 9 3

1 9 . 9 9

2 0 . 2 9

21 .43

23 .01

250 C 300 C

BEFEBEHC2S: 1 1 ; 1 8 ; 2 2 ; 2 3 .

COHHENTS: ~ r H o ( I = 1 . 6 ) = - 5 0 0 0 0 ( B e £ . 2 3 ) .

* Ag ueoiis * * S o l u t i o n s * * Database *

EQDILIBBIOH BEiCTIOB: Np02* + C03-

•KPTOWIOs C A B B O I A X B S rc » IP18 Septeabar 198tt

Hp02C03-

THEBMOCHEHICaL PBOPEBTIES:

*rHo, J aol-1 : 49135 "So. J aol-1 K-1 : 277.80 ~Cpo, J aol-1 K-1 : 190.00 Ay~z2,(kg aol-1) 1/2 : - 2.04 b, kg aol-1 : -0.39 log Ko : 5.90

E0OILIBHIUM QUOTIENTS: I=ionic strength, aol kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C

0.00 5.90 6.59 7.25 7.86 8.99 9.99

0.01 5.71

0.10 5.37

0.20 5. iy

0.50 4.86

1.00 4.49

2.00 3.92

J. 00 3.44

250 C 300 C

BEFEBENCES: 11; 17

COMMENTS:

* Agueous * * Solutions * * Database •

MEPT0MI09 CIBBOHATES r e = HP19 O c t o b e r 1984

EQUILIBHIBfl BEICIIOH: 2Np02+t *C02 (ag) *l»H20= (Np02) 2C03 (OH) 3 - + 5Hf

THEBBOCHEHICAI, PBOPEBTIES:

~rHo , J » o l - 1 "SO, J BOl-1 K-1 "Cpo, J » o l - 1 K-1

A y ~ z 2 , (kg m o l - 1 ) 1 /2 b , kg B O I - 1 l o g Ko

E Q U I L I B R I U M Q U O T I E N T S : I = i o n i c s t r e n g t h , a o l k g - 1

1/T 25 C

1.00 -18.60

50 C 75 C 100 C 150 C 200 C 250 C 300 C

REFEBENCES: 18.

COHHENTS:

* Ag aeons * * Solutions * * Database *

HEPTOaiON OXIDES rc ' MP22 Dcceaber 1984

EQUILIBBIDH BEACTION: 2Hp02 ( s | * UH* * 0 2 ( g ) * 2Np02»* * 2H20

THEBBOCHEBICM. PBOPEBTIES:

*rHo, J BOl-1 : - 1 H 1 8 6 0 "So, J a o l - l K-1 : - 4 1 1 . 6 2 "Cpo, J a o l - l K-1 : 8 .80

Ay~z2, (kg ao l -1 ) 1/? i b, kg a o l - 1 : log Ko : 3 .88

EQDlLlBBIua QUOTIENTS: I - i o n i c s t r e n g t h , ao l kg-1

log Q I/T 25 C 0.00 3.88 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 2 250 C 300 C 1.92 0.24 - 1.21 - 3.59 - 5.47 - 6.98 - 8.22

REFERENCES; 22; COMMEHTS:

HEPTOJUOn OXIDES rc = MP21 October 1984

EQUILIBRIUM BEACTIOH: 4»p02(s) * HH* * 02(g) * 4Np02» • 2H20

THEHHOCHEHICAi PBOPEBTIES; "CHO, J « o l - 1 " S o , J l o l - l K-1 "Cpo, J « o l - 1 K-1

Ay"z2,(kg BO1-1> 1/2 b , kg n o 1 - 1 l o g Ko

-188460 -470.02 224.38

EQ01LIBH1DH QUOTIENTS: I=ionic strength, aol kg-1

I/T 0.00 0.01 0.10 0.20 0.30 1.00 2.00 3.00

25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 8.47 5.95 3.86 2.10 - 0.65 - 2.67 - 4.18 - 5.34

REFEBENCES: 22. COMMENTS:

*••**>*****•* NEPTUNIUM * Aqueous * OXIDES * Solutions * re « MP23 * Database * December 1984 ************* EQUILIBBIUN BEiCTlON: UpC2(s) • HB* = »pf*t+ • 2H20

THEHHOCHEBICAL PBOPBBTIES:

"rHo, J BOI-1 : - 53760 "So, J nol-1 K-1 : -329-58 "Cpo, .7 nol-1 K-1 : 29.37 Ay"z2, (Itg nol-1) 1/2 b, kg mol-1 log Ko : - 7.80

EQOILIBHIUM QUOTIENTS; l=ionic strength, noi kg-1

log Q I/I 25 C 0-00 - 7.80 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C - 8.52 - 9.13

100 C 150 C 200 C - 9.65 -10.19 -11. IJl

250 C 300 C -11.61 -12.05

REFEHENC1.3: 22; COMMENTS:

» * • * * » * » » » » » * * Aqueous * * So lu t ions * * D a t a b a s e *

NEPTUNIUH loss r e = BP2» December 1981

EQDILIBBIUa BEACTIOH: 2Np02* + HH+ = 2Hp*++ * 0 2 ( g ) * 2H20

THEBMOCHEHICAL PBOPERTIES:

~rHo, J a o l - 1 : 3 3 0 3 4 0 " S o , J « o l - 1 K-1 : 2 8 . 6 6 "Cpo, J « o l - 1 K-1 : - 1 2 4 . 0 6

A y - 2 2 , (kg » o l - 1 ) t/2 : b , kg m o l - 1 : l o g Ko : - 5 6 . 3 7

EQOILIBBXON QUOTIENTS: I = i o n i c s t r e n g t h , a o l kg -1

I/T 25 C

0.00 -56.37

50 C 75 C 100 C 150 C 200 C 250 C 300 C

-51.92 -48.13 -44.89 -39.63 -35.56 -32.34 -29.73

BEFERBNCES: 22;

CONNEHTS:

* Aqueous * * Solution* * * Databaaa • *••»•**»*»•»•

airzoaioa xoas cc » a*25 Dacaabec 1981

ECOILIBBIQa RElCTIOi: »Rp02* • 12H* » «Bp++»» * 02(g) • 6B20

THBBaOCHBHICaL PBOPEBTIBS: CHO, J BOl-1 ; - 26580 So. J aol-1 R-1 i -6*8.30 Cpo, J aol-1 K-1 : - 106.89 kr*z2,(kg aol-1) 1/2 : b, kg ao1-1 log Xo -J9.65

EQOIJ.IBBIUB QUOXIEWIS: l « i o n i c s t r e n g t h , ao l kg-1

I/T 25 c 50 C 75 C

l og Q

100 C 150 C 200 C 250 C

- 0 2 . 3 9

-<I2.B5 0.00 -39.65

-40.03 -«0 . 38 -40.72 -41.33 -41.89

RKFiSHEKCES: 2 2 ;

COflHENIS:

************* * Aqueous * * Solutions * * Database » *************

NEPTUKIUH IONS CC = NP26 December 1984

EQUILIBBIUM BEACU'ION: «Np02+ * UH + + 0 2 ( g ) = l»Np02* + • 2H20

THEBHOCHEfllCAL PROPERTIES:

" c H o , J mo l -1 : -101260 "So , J mo l -1 K-1 : - 3 5 3 . 2 2 ~Cpo, J mo l -1 K-1 : - 206.78

Ay~z2, (kg a o l - 1 ) 1/2 b, kg mol -1 l o g Ko : - 0 .71

EQUILIBRIUM QUOTIENTS: l = i o n i . c s t r e n g t h , mol k g - 1

l o g Q

I / T 25 C

0 .00 - 0 .71

0 . 10

0 . 2 0

0 . 5 0

50 C 75 C 100 C

- 2 .12 - 3 .38 - 4 .53

150 C 200 C

• 6 . 5 4 - 8 .26

250 C 300 C

• 9.77 - 1 1 . 1 0

HEFEBENCES: 2 2 ;

CUHHENTS:

************* * Aqueous * * Solutions * * Database * *************

•BPTOBIOH 01IDES CC - BP27 D«c«abec 198*

EUOItlBBIOH BEACTIOH: 2>p02(•) • 02(g) • 2H20 » 2Np02 (OB) 2 (S)

TBBBaOCHEHICAL PBOPERTIES; "CUO, J BOl-1 "SO, J «ol-1 E-1 "Cpo, J «oi-1 K-1 Ay-z2, (kg «ol-1) 1/2 b, kg BOI-1 log Ko

- 34360 -269.46 - 88.36

EQOILIBBIOH QUOTIENTS: I=ionic strength, iol kg-1

log a I/X 25 C 0.00 - 8.05 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C - 8.S3 - 8.97 - 9.37 -10.09 -10.71 -11.25 -11.74

BEPERENCES: 22;

COMMEHTSJ

************* * lqueous * * So lu t ions • * Database * *************

MEPiamud OXIDES CC = NP28 Becember 1984

EQ01LIBBI0H BEACTION: 4Np02(S) * 0 2 ( g ) • 2H20 = 4Np02 (OH) (aa)

THEBHOCHEMICAI. PBOPERTIES:

~rHo , J a o l - 1 : - 3 0 6 6 0 " S o , J « o l - 1 K-1 : - 2 6 2 . 0 6 "Cpo, J a o l - 1 K-1 : - 4 2 . 0 6

Ay*z2 , {kg a o l - 1 ) 1/2 b, kg a o l - 1 l o g Ko : - 8 . 3 2

EQ0ILIBB1UM QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

0.00 - 8 .32

0 . 10

- 8 . 7 4

75 C 100 C

- 9 .11 - 9 .45

150 C 200 C

-10 .02 - 1 0 . 5 0

-10 .92

- 1 1 . 2 8

BEFEBENCES: 2 2 ;

COMMENTS;

****«»•••*•** aiPtenoH • Aqueous * OXIDES • S o l u t i o n s * cc « »P29 • Database * D«c*ms«r 198*

EQUILIBBIUH KEaCTIOH: 4lp02(S) • 02(g) « 2lp205(S)

THBBHOCHBnTCAL PBOPEBIIES:

EHo, J lol-1 . - 500 So. J «ol-1 K-1 -200.24 Cpo» J «ol-1 K-1 : - 36.20 »y~z2, (kg aol-1) 1/2 b, kg »ol-1 log Ko : -10.37

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , s o l kg-1

I / l 25 c

0 .00 - 1 0 . 3 7

0 . 0 1

0 . SO

50 C 75 C 100 C 150 C 200 C

- 1 0 . 3 8 - 1 0 . 4 1 - 1 0 . 4 3 - 1 0 . 5 0 - 1 0 . 5 8

2S0 C 300 C

- 1 0 . 6 6 - 1 0 . 7 4

REFERENCES: 22;

COMC1BHTS;:

* Agueous » * So lu t ions * * D a t a b a s e *

EQUILIBBIUM REACTION; Hp02(s) • 2H20 = Up (OH) 4 ( s )

THEBSOCHEfllCAL PBOPEBTIES:

"rHo, J » o l - 1 : 2 4 8 7 2 " S o , J a o l - 1 K-1 : - 8 1 . 1 2 ~Cpo, J n o l - 1 K-1 : - 8 5 . 7 9

A y ~ z 2 , ( k g I O I - I ) 1 / 2 : b , kg a o l - 1 : l o g Ko : - 8 . 5 9

EQUILIBRIUM QUOTIENTS: I = i o a i c s t r e n g t h , s o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 - 8.59 - 8.27 - 8.02 - 7.82 - 7.55 - 7.39 - 7.31 - 7.28 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

BEFEBEHCES: 2 2 ;

COMMENTS:

MEPTBMIUfl OXIDES r e = JIP30 December 1984

* Ajueons * * Solutions * * Database *

BQUILIBHIDH HEACTIOH: Hp (s) • 02(g) » Mp02 {»)

NIPTOVXBN OXIDIS tc • ntai , D«c*ab«c 198*

THERMOCUEBICAL PBOPERTIES:

"rHo, J a o l - 1 " S o , J « o l - 1 K-1 ~ C p o , J » o l - 1 K-1

A y " z 2 , ( k g BOl-1) 1 / 2 h, kg mo 1-1 l o g Ko

0.32 7.23

EQUILIBBIOH QUOTIEHTS: I=ionic strength, «ol kg-t

log Q I/I 25 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C 97.95

BBFERENCES: 22:

CQHHENTS: " rHo = - 1 0 7 1 0 0 0 ; Log Ko = 1 8 8 . 1 6 ( 2 5 0 ; 1 7 3 . 6 0 ( 5 0 0 ; 161.11(750; 150.35(1000: 132.60(1500; 118.61(2000: 107.29(2500 i

************* * Agueous * * So lut ions * * Database * *************

MEPTUKIOM OXIDES EC = HE32 D e c e i b e t 1984

EaUIlIBBIOM REACTIOH: 4Np02(S) * 12H* = 4Np**» + 0 2 ( g ) * 6H20

THEBHOCHENICAL PBOPESTIES:

"rHo, J a o l - 1 : 472220 " S o , J m o l - 1 K-1 : - 4 1 2 . 7 0 ~Cpo , J ao 1-1 K-1 : - 2 3 . 7 3

» y ~ z 2 , (kg a o l - 1 ) 1 /2 b, kg B O I - 1 l o g Ko

EQUILIBBIUH QDOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

0 . 0 0

50 C 75 C 100 C 150 C 200 C 250 C 300 C

- 9 7 . 8 8 - 9 2 . 4 1 - 8 7 . 6 8 - 7 9 . 9 1 - 7 3 . 8 0 - 6 8 . 8 6 - 6 4 . 8 0

BEFEBBNCES: 2 2 ;

COMMENTS: Log Ko •104.28(25c) ;

**•»••**•*••* MEPTonaa * Aqueous * HXDBUZIOBS * solutions * re • »P33 * Database * D*c«>b«r 198*

EQUILIBRIUH BEACTIOH: Hp (OH) « ( s ) * 4B* » Hp**** • 4H20

THEBaOCHEfllCAL PBOPEBTIES:

* r H o , J • o l - 1 : - 7 8 0 5 5 "So. a » o l - 1 K-1 : - 2 4 8 . 4 6 -Cpo, J « o l - 1 K-1 : 115.16

Ay-z2, (kg »ol -1) 1/2 j b , kg i o l - 1 : log Ko : 0 .70

EQ0H.IBBI0H Q0OTIEH1S: i = i o n i c s t r e n g t h , i o l kg-1

0 . 0 1

25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0o70 - 0.34 - 1.20 - 1.91 - 3 . 0 1 - 3 .81 - 4 . 3 9 - 4 .82

REFERENCES: 2 2 ;

COfltlENTS:

• * * * * * * » • • « • * MEPIUHIUa * A y u e o u s * OXIDES * S o l u t i o n s * r e = NP34 * Database * Deceabec 1984

EQUILIBRIUM EEiCTIOS: Hy205 ( s ) + 2H* = 2Np02* • H20

THERHOCHEMICAL PROPERTIES:

~rHo, J n o l - 1 "So, J mol-1 K-1 "Cpo, J BOl-1 K-1

i y ' z ? , (kg l o l - l ) 1/2 t , kg a o l - 1 l e g Ko

- 93980 -13U.89

130.29

EQUILIBBIUH QUOTIENTS: I=ionic strength, BOI kg-1

I/T 25 C 0.00 9.42 0.01 0.10 0.20 0.50 1.00 2.00 J.00

8.17 75 C 7.13

100 C 6.27

150 C 4.93

200 C 3-95

250 C 3.24

300 C 2.70

fiEFEB":;cES: 22; COHMENTS:

* i g n e o u s * HIDBOXIDES * S o l u t i o n s • r e » « M 5 * D a t a b a s e * D c c s a b e r 1984,

EQDILIBB10H BE&CTIOH: Np02 (OH) ( a i ) + H+ » » p 0 2 * * H?.0

THJ3RM0CHEMICAL PBOPEKTIES:

"rHo, J « o l - 1 " b o , J B o i - 1 K-1 ~Cpo, J Bo'i-1 K-1

& y " z 2 , (kg B O 1 - 1 ) 1 /2 b, kg B O I - 1 l o g Ko

39150 51.99 81.29

EQUILIBBIOH QUOTIENTS: l = i o n i c s t r e n g t h , B O I k g - 1

l o g Q

I / T 2 5 C

0 . 0 0 4 . 2 0

0 . 0 1

0 . 1 0

3 . 6 7

2 . 3 9

3EFEEESCES: 2 2 ;

COMMENTS;

************* * kguecus * * Solutions » * Database * *************

NEPTDMIlfll HYDB0XID33 r o = NP36 D e c e a b e r 1984

EUUILIBBIUM BEiCTION: Np02(OH)2(s ) * 2H+ = Hp02++ * 2H20

TIlERMOCHEtllCiL PROPERTIES:

"rHo, J B O I - 1 " S o , J a o l - 1 K-1 "Cpo, J mo l -1 K-1 Ay"z2, (kg nol-1) 1/2 b, kg mo 1-1 log Ko

55250 71.08 18.58

EQUILIBBIUN QUOTIENTS: I=ir">ic strength, «ol kg-1

log Q I/T 25 C 0.00 5.97 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 5.23

75 C 4.61

100 C 4.08

150 C 3.25

200 C 2.62

250 C 2.14

300 C 1.76

REFEBENCES: 22; COMMENTS:

NEPTUNIUM References June,1964

J. Fuger; F.L. (letting: "The Chemical Thermodynamics of Actlnlde Elements and Compounds. Part 2. The Actlnlde Aqueous Ions",International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). A.I. Hoskvin: Radiokhlmlya 1973, v. 15, 504. C.F. Baes; R.E. Hesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). J. Halperin; J.H. Oliver: Radlochim. Acta 1983, v. 33, 29. G.R. Choppin; P.J. Unrein: 'Thermodynamic Study of Actiniae Fluoride C^mplexation"; in, Transpluton.'um Elements, U. Muller and R. Lindner (eis.), North-Holland (1976). C.F. Bass; R.E. Mesmer: Am. J. Sci. 1981, v. 281, 935. R.H. Smith; A.E. hartell; Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). L. Bednarczyk; I. Fidelis: J. Radioanal. Chem. 1978, v. 45, 325. P.R. Vasuaeva Rao; N.M. Gudi; S.V. Bagawade; S.K. Patil: J. Inorg. Nucl. Chem. 1979, v. 41, 235. A.I. Moskvin; A.N. Poznyakov: Russ. J. Inorg. Chem. 1979, v. 24, 1357. L. Maya: Inorg. Chem. 1983, v. 22, 2093. J. Fuger: "Thermodynamic Properties of the Actinides: Current Perspectives"; in, Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982), p. 409. L.R. Morss: "Complex Oxide Systems of the Actinides"; in, Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982), p. 381. K.L. Nash; J.H. Cleveland: Radiochim. Acta 1983, v. 33, 105. F. David; K. Samhoun; R. Guillaumont; N. Edelstein: J. Inorg. Nucl. Chem. 1978, v. 40, 69. Obtained by averaging Cp° for P u 4 + and U , + (see Ref. 1, p. 32). S.L. Phillips: "Hydrolysis ana Formation Constants at 25° C", LBL-14313, Lawrence Berkeley Laboratory, One Cyclotron Roao, Berkeley, CA 94720 (May 1982).

18. L. Maya: Inorg. Chem., 1n press (1984). 19. J. Fuger; V.B. Parker; W.N. Hubbard; F.L. Oetting: "The Chemical

Thermodynamics of Actinide Elements and Compounds. Part 8. The Actinide Hal ides", International Atomic Energy Agency, Wagramerstrasse, . P.O. Box 100.A-1400 Vienna, Austria (December 1983).

20. F.L. Oetting; M.H. Rand; R.J. Ackermann: "The Chemical Thermodynamics of Actiniae Elements and Compounds. Part 1. The Actinide Elements", International Atomic Energy Agency, Kamtner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (March 1976).

21. E.H.P. Cordfunke; P.A.G. O'Hare: "The Chemical Thermodynamics of Actinide Elements ana Compounds. Part 3. Miscellaneous Actinide Compounds". International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (January 1978).

22. R.J. Lemire: "An Assessment of the Thermodynamic Behavior of Neptunium in Water and Moael Groundwater from 25 to 150° C", AECL-7817, Atomic Energy of Canada, Ltd., Pinawa, Manitoba, Canada (March 1984).

23 F. Schreiner; A.M. Friedman; R.R. Richards; J.C. Sullivan: "Microcalorimetric Measurement of Reaction Enthalpies in Solutions of Uranium and Neptunium Compounds", CONF-840807-2, Argonne National Laboratory, Argonne, IL (August 1984).

*»»*•»»***#•• * igneoaa • * Solations * * Database * -

EQUILIBilOB BSaCTIOl: BB3Jg) « BH3(«g)

SIIB04IB , ftHMlIA rc » Ml Saptaabar 19S*

THISBHOCHEBICll P80PIBIIKS:

"rBo, J a o l - 1 "So, J a o l - 1 K-1 "Cpo, J ao l -1 K-1 Ay~z2,|kg aol-1)1/2 b, kg aol—1 log Ko

3*350 81.37 51.34

EQOH.IBHI0S QVOTiensz i^ioaic strangtt, aol kg-1

log Q I/I 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 1.77 1.31 0.93 0.62 0.11 - 0.21 - 0.»7 - 0.65 0.01 0.10 0.20 0.50 1.00 2.00 3.00

BBFEBEKCES: 1;2 CQBHEHTSI

* Aqueous • • * Solutions * * Database • • * * * * * » » » * * • *

EyUILIBRIDH REACTION: IIU3 <aq) » H* - NH4 +

IITB06EH cc * V2 Septeater 1984

TBEBHOCBEHICAJ. PBOPEBTIES: "rHo, J nol-1 "SO, J BOl-1 K-1 "Cpo, 3 aol-1 K-1 Ay-z2, (kg aol-1) 1/2 b, kg aol-1 log Ko

52970 0.13 6.50

EQUIUBBIOM QDOTIEHTS: I=ionic strength, nol kg-1

log Q I/T 25 C 0.00 9.27 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C ft. 55

75 C 7.93

100 C 7.39

150 C 6.51

200 C 5.81

250 C 5.24

300 C 1.76

REFERENCES: 1;2 COHHENTS;

**•••**•*•**• aitaocia • tqneoas • 1BBOBU • Solotioa* * ec - B3 • Database 3 BomaJwc 198*

BQOH.IBBIOB aS&CSIOB: KB3(«q) • HC03- » B2BCOO- • B20

IHE8HOCHEHIC4L PBOPEtTIIS: " r H o , J BOl-1 "SO, J B O l - 1 K-1 "Cpo, J a o l - 1 K-l »r"z2. (leg aol-1)1/2 b, kg aol-1 log Ko

2*070 71.49

38.11 0.00

BQOILIBBIOB QOPTIBBTSJ 1'ioai.c stcaagth, aol kg-1

log Q I/T 25 C 0.00 0.08 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 0.15 - 0.1i

100 C 150 C 200 C - 0.41 - 0.87 - 1-26

250 C 300 C - 1.59 - 1.89

BEFE8£HCES: d coaflEtras: ~rHo,~so,~Cp<» e s t i a a t e d £coa data i n Beference 8.

* Agueous * * So lu t ions * * D a t a b a s e *

HXXilOGZI 4HH0HIA r e *• Ktt NoYeaber 1984

EQUILIBBIOfl BEACIIOH: HH3(a(j) * C 0 2 ( a g ) * H20 - MHH* * HC03-

CBEBSOCHEHIC&L fEOPERTIBS:

"rHo, J n o l - 1 " S o , J BOl-J K-1 "Cpo, J s o l - 1 K-1

A y " z 2 , ( k g a o l - 1 ) 1 /2 b , kg » o l - 1 l o g Ko

4 5 3 3 0 9 6 . « « 3 7 7 . 7 9 1.02

EQUILIBRIUM QUOIlBNTSi l = i o n i c s t r e n g t h , s o l k g - 1

l o g c

I / I 25 C 50 C

0 . 0 0 2 . 8 9 2 . 2 3

0 . 5 0

1 . 0 0

2 . 0 0

3 . 0 0

100 C 150 C 200 C

0.85 - 0 .52 - 1.84

250 C 300 C

- 3 . 1 2 - l». 33

REFERENCES: a

CONHENTS;

NITROGEN References June 1984

0.0. Wagman; W.H. Evans; V.B. Parker; R.H. Senium; I. Halow; S.H. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, 0. Phys. Chen. Ref. Data 1982, v. 11, Suppl No. 2. J.W. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982). This work. CODATA Task Group on Key Values for Thermodynamics: UODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). L. Haar; J.S. Gallagher: J. Phys. Chem.Ref. Data 1978, v. 7, 635. G.C. All red; E.M. Wool ley: J. Chem. Thermodynamics 1981, v. 13, 155. A.J. Read: J. Solution Chem. 1982. v. 11, 649. G. Maurer: "On the Solubility of Volatile Weak Electrolytes in Aqueous Solutions", in, Thermodynamics of Aqueous Systems with Industrial Applications, S.A. Newman, ed., ACS Symp. Ser. 133, American Chemical Society, Washington, DC (1980), p. 139.

S.L. Phillips: "Thermodynamic Properties of Aqueous Weak Volatile Electrolytes to High Temperatures", American Institute of Chemical Engineers, 1984 Annual Meeting, San Francisco, CA, November 25 - 30, 1984.

************* * Aqueous » * s o l u t i o n s * * D a t a b a s e * •*•*******••• EQUXLIBBIUM KBACTION: 0 2 ( g ) = 0 2 (aq)

OXYGEV GASES r e = 01 S e p t e m b e r 1484

THEBH0CHEMICA1 PH0PE2TIE5:

" rHo , J a o l - 1 "So, J a o l - 1 K-1 ~Cpo, J mo 1-1 K-1

Ay*z2 , (kg rcol-1) 1/2 b , kg a o l - 1 l o g Ko

12000 9"».1« 175.6U

iSQUILIBBIBM QUOTIENTS: I = i o n i c s t r e n g t h , « o l k g - 1

log Q 1/1 25 C 0.00 - 2.81 0.01 0. 10 0.20 0.50 1.00 2.00 J.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C - 2.95 - 3.01 - 3.02 - 2.93 - 2.75 - 2.51 - 2.23

REFERENCES: 5;*>; 10 COEMENTS:

************* * aqueous * « Solutions * * Database • » . * * * * • * * * * • * * F.aOII.IBBIUM BEftCIIOM: 1120 = OH- • H+

OXISEK HMEH r c = 02 S e p t e m b e r 1984

THERMOCHEMICAL PBOPEBTIES:

" r H o , J tnol -1 ; 5 5 8 0 5 ~ S o , J a o l - J K-1 : - 8 0 . 6 2 ~ C P O , J mo i -1 K-1 : - 213.29

A y * z 2 , ( k g u o l - 1 ) i / 2 : 1 .02 b, kg nol-1 : -0.23 l o g Ko : - 1 3 . 9 9

E2UILIBBIUM QUOTIENTS: l=ionic strength, nol kg-1

I / T 25 C 50 C 75 C

0.00 - 1 3 . 9 9 - 1 3 . 2 7 - 1 2 . 7 1

0 .01 - 1 3 . 9 0

0., 10 - 1 3 . 7 7

0-20 - 1 3 . 13

0.50 - 1 3 . 7 1

1,. 00 - 1 3 . 7 7

2 .30 - 1 3 . 9 7

3.. 00 - 1 H . 2 1

100 C 150 C 200 C

-12.28 -11.71

250 C 300 C

KEFEPENCES: 5;10;1«.22:*3;2U;25;26;31;21 COMMENTS:

* * * * * * * * * * * * * OXYGEH * Aqueous * BATEH * s o l u t i o n s » re = 03 * D a t a b a s e * September 1984

EQOIlIflHIOH REACTION: H20 = OH- • H*

1HERKOCHEMICA1 PROPERTIES:

THo, J mo l -1 : 5 5 8 1 5 S o , J n o l - 1 K-1 : - 8 0 . 6 7 Cpo, J « o l - 1 K-1 ; - 231.110 Ay"z2 , Jkg B O I - 1 ) 1/2 : 1 . 0 2 b , kg m o l - 1 5 l o g Ko : - 1 3 . 9 9

ijQUILIBfllua CDUTIENT3: I = i o n i o s t r e n g t h , i o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 -13.99 -13.20 -12.71 -12.27 -11.64 -11.29 -11.19 -11.41 0.01 -13.91 0.10 -13.78 -13.05 -12.47 -12.00 -11.33 -10.93 -10.72 -10.65 0.20 0. SO -13. 72 -12.97 -12.38 -11.90 -11.19 -10.73 -10.43 -10.19 1.J0 -13.75 -13.00 -12-40 -11.92 -11.18 -10.68 -10. M - 9.98 2.00 J.00 -14.01 -13.23 -12.60 -12.07 -11.26 -10.66 -10.16 - 9.57

REFERENCES: 2;19;33 CUMI1ENTS: lot; j = - 1 2 . 3 0 (350 C) ; - 1 5 . 7 4 ( 3 7 4 . 1 C ) . T h e s e a c e o i l

smoothed v a l u e d .

OXYGEN References March 1984

C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). F.H. Sweeton; R.E. Mesmer; C.F. Baes: J. Solution Chem. 1974, v. 3, 191. G. Olofsson; I. Olofsson: J. Chem. Thermooynamies 1981, v. 13, 437. A.K. Covington; M.I.A. Ferra; R.A. Robinson: O.C.S. Faraday 1977, v. 74, 1721. J.W. Cobble; R.C. Murray; P.O. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982). C.C. Criss; J.W. Cobble: J. Am. Chem. Soc. 1964, v. 86, 5390. M. Uematsu; E. U. Franck: J. phys. Chem'. Ref. Data 1980, v. 9, 1291. H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; 1.1. Khcdakovsky: "Handbook of Thermodynamic Data".Translated by G.O. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025. (January 1974). PB-226 722, NTIS.

D.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schuimt; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ea., John Wiley & Sons, Inc., New York (1980). R. Battino; T.R. Rettich; T. Tominaga: J. Phys. Chem. Ref. Data 1983. v. 12, 163. J. Anathaswamy; G. Atkinson: J. Chem. Eng. Data 1984, v. 29, 81. S.J. Gill; I. Wadso: J. Chem. Thermodynamics 1982, v. 14, 905. I. Olofsson; S. Sunner: J. Chem. Thermodynamics 1979, v. 11, 605. S.L. Pnillips: Anal. Chem. 1966, v. 38, 1714. w. Gordy; k.J.O. Thomas: J. Chem. Phys. 1956, v. 24, 439.

CODATA Task Group on Key Values for Thermodynamics: CODATA Recommended Key values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April

19. W.L. Marshall; E.U. Franck: 0. Phys. Chem. Ref. Data 1981, v. 10, 29b. 20. C.P. Bezboruah; M.F.G.F.C. Camoes; A.K. Covington; O.V. Dobson: J.C.S.

Faraday I, 1973, v. 69, 949. 21. A.J. deBethune; T.S. Licht; N. Swendeman: J. Electrochem. Soc. 1959, v.

106, 616. 22. G. Olofsson; L.G. Hepler: J. Solution Chem. 1975, v. 4, 1£7. 23. P.P. Singh; E.M. Woolley; K.G. KcCurdy; L.G. Hepler: Can. J. Chem. 1976,

v. 54. 3315. 24. P.P. Singh; K.G. hcCurdy; E.M. Woolley; L.G. Hepler: J. Solution Chem.

1977, v. 6, 327. 25. 0. Enea; P.P. Singh; E.M. Woolley; K.G. McCurdy; L.G. Hepler: J. Chem.

Thermodynamics 1977, v. 9, 731. 26. G.C. Allred; E.M. Woolley: 0. Chem. Thermodynamics 1981, v. 13, 147. 27. W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New

York (1979). 28. D.J. Bradley; K.S. Pitzer: J. Phys. Chem. 1979, v. 83, 1599. 29. Standard Methods for the Examination of Water and Wastewater, 15th ed.,

American Public Health Association, Washington, DC 20005 (1981). 30. H. Kienitz; K.N. Marsh: Pure A'ppl. Chem. 1981, v. 53, 1857. 31. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. J. Chem.

1983, v. 61, 2509. 32. B.B. Benson; D. Krause; M.A. Peterson: J. Solution Chem. 1979, v. 8, 655. 33. S.L. Phillips: "Hydrolysis and Formation Constants at 25° C",

LBL- 1313, Lawrence Berkeley Laboratory, One Cyclotron Road, Berkeley, CA 94720 (May 1982).

34. F.J. Millero; D.R. Schreiber: Am. J. Sci. 1982, v. 282, 1508. 35. B. Riedl; C. Jolicoeur: J. Phys. Chem. 1984, v. 88, 3348. 36. R.E. Mesmer: Private Communication, September 1984. 37. G. Olofsson; A.A. Oshod; E. Qvarnstrom; I. Wadso: J. Chem.

Thermodynamics 1984 ,. v. 16, 1041.

* Aqueous * * Solutions * * Database * ************* EQUILIBBIOM REACTION: H3PO«(ag) = K2P04-. * H*

PHOSPHOiOS PHOSPHATES rc • PI S«pt«afa«£ 19St

TBEBSOCHESICAL FBOPEBIIES:

* r H o , J mol-1 : - 7 9 5 0 - S o , J mo l -1 K-1 : - 7 0 - 7 3 "Cpo, J iao l -1 K-1 : - 1 2 8 . 0 0

Ay"z2 , (kg ttol-1) 1/2 : 1.02 b , kg n o l - 1 : - 0 . 1 5 log Ko : - ?.30

E a u i i l B B l U H QUOTIENTS: I = i o n i c s t r e n g t h , r o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 - 2.30 - 2.43 - 2.58 - 2.71 - 3.0B - 3.43 - 3.78 - 1.13 0.01 - 2.21 . 0.10 - 2.07 0.20 - 2.01 0.50 - 1.95 1.00 - 1.91 2.00 - 2.00 3.00 - 2. 10

R£FEHENC£S: 1;5j7 COHaEHTS:

A * * * * * * * * * * * * EUOSPHOHUS • A q u e o u s * PHOSPHATES * S o l u t i o n s * EC = P2 * D a t a b a s e * S e p t e m b e r I960

EQUILIBBIUH REACTION: H3P04(ag) + 013- = H2PO0- * H20

THERHOCHEHICAL PROPERTIES:

"r i lo , J B O I - 1 : - 63755 " S o , J m o l - 1 K-1 : 9 . 8 9 *Cpo, J n o l - 1 K-1 : 8 5 . 2 9

A y " z 2 , ( k g n o l - 1 ) 1 /2 : 0 . 0 0 b, kg n o l - 1 : 0 . 1 1 l o g Ko : 1 1 . 6 9

E Q U I L I B R I U M QUOTIENTS: I = i o n i c s t r e n g t h , n o l Kg-1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 11.69 10. 83 10.13 9.5U 8.63 7.96 7.17 7.10 0.01 11.69

0.10 11.70

0.20 11.72

0.50 11.76

1.00 11.83

2.JO 11.97

3.00 12. 11

DEFERENCES: 1 ; 3 ; 6 ; 7

COMflENTS:

***•*»•**«*•* PHOSPHORUS * Aqueous * PH0SPHAT8S * Solutions * r e » P3 * Database • S«pt««bor 1984

EQUILIBBIUM BBACTIOJI: H3P0H (aq) * HPOK-- • 2Hf

THERHOCHEMICAL PBOPEBTIE.S:

"rHo, J «o l -1 "So, J « o l - 1 K-1 "Cpo, J no1-1 K-1

Ay~z2, {kg « o l - 1 ) 1/2 b, kg no 1-1 log Ko

- 3801) - 1 9 7 . 7 5 - 348 .00

- 9.66

EQUILIBBIDK QUOTIENTS: l=ionic s t rength , io l kg-1

I/T 25 C 0.00 - 9.66 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C - 9.77 - 9.97 -10.22 -tQ.85 -11.58 -12.35 -13.It

»»«*»•*•**•** PHOSPHORUS * Aqueous * PHOSPHATES * s o l u t i o n s * re = P4 * Database * Septeaber 1984

EQUllliSMUH REACTION: H3P04 (ag) = P04 + 3H+

THEHHOCHEMICAI. PROPERTIES:

"rrio, J mol -1 " S o , J B O I - 1 K-1 "Cpo, J mol-1 K-1

h-j'7.2, {kg n o l - 1 ) 1 /2 b , kt mo l -1 log ko

10940 -381.40 - 590.00

- 2 1 . 8 4

EQUILIBEIUM QUOTIENiS: I = i o n i c s t r e n g t h , mol k g - 1

log Q I/T 25 C 0.00 -21.84 0.01 0. 10 0.20 0.50 1.00 2. 00 J.00

50 L -21.79

75 C -21.91

100 C 150 C -22.17 -22.96

200 C 250 C 300 C

-23.96 -25.09 -26.27

HKFiil i l iNCES: 1 : 6 i 7

COBNENT3:

EQUIUBHIDIi BEACXIOM: H2P04- 1IP04- • H*

fJWSPNOMIS PBOSPHATIS r c • P5 S a p t a a b a c 1984

" r H o , J B O I - 1 : 4 1 5 0 " S o , J n o l - 1 K-1 : - 1 2 7 . 0 0 "Cpo, J a o l - 1 K-1 : - 2 2 0 . 0 0

A y _ z 2 , ( k g » o l - 1 ) 1 /2 : 2 . 0 4 b, kg a o l - 1 : - 0 . 0 4 l o g Ko : - 7 . 3 6 B9 = 2 . 0 1

EQ0ILIEHI0H QOOTiENrs: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

1/1 25 C 50 C 75 C

0 .00 - 7.36 - 7 .34 - 7 .39

0 . 0 1 - 7.20

0 .10 - 6.98

0 .20 - 6 .89

0.50 - 6.79.

1.00 - 6 .73

2 .00 - 6 .69

3 .00 - 6 .70

100 C 150 C 200 C

- 7 .48 - 7 .78 - 8 .15

250 C 300 C

• 8 .57 - 9 .01

BEFEBENCES: 1 ; 5 ; 7 ; 8

COMMENTS:

************* PHOSPHORUS * Aqueous * PHOSPHATES * Solutions * re = P6 * Database * Septeabec 1984 ************* EQUILIBRIUM REACTION: H2P04- • OH- = HP04-- • H20

THERJIOCHEMICAL PROPERTIES:

"rHo, J m o l - 1 : - 5 1 6 5 5 " S o , J n o l - 1 K-1 : - 4 6 . 3 6 "Cpo, J mol-1 K-1 : - 6 . 7 1

A y " z 2 , (kg o o 1 - 1 ) 1 / 2 : 1 . 0 2 b, kg a o l - 1 : l o g Ko : 6.(S3

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , n o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 25 0 C 300 c

0.00 6.63 5.92 5.32 4.79 3.93 3.25 2.69 2.22 0.01 6.70

0. 10 6.79

0.20 o. 8i*

0.50 fa.y2

1.00 i. an

2.00 7.2d

3.00 7.51

INHERENCES: 1 ; 5 ; 7

COMMENUS: l o c j u ( I ) c a l c u l a t e d trora logKw and i o n i z a t i o n c o n s t a n t s a t 25C f o r H 2 P 0 t - .

************* * Aqueous * * solutions * * Database * *••***••***•* BQOILIBHIUM REACTIOK; HP04-- • P0« • H+

PBOSPHOBUS PBOSPiUIIS r e • P7 September 1984

THEfiHOCHEMICAL PH0PERTIE3: "rHo, J mol-1 J 1"»740 "So, J nol-1 1 : -183.70 "Cpo, J aol-1 K-1 : - 2U2.00 Ay*z2,<kg nol-1) 1/2 : 3.06 b, kg mol-1 : -0.12 log Ko : -12.17 B9 = 1.96

EQU1LIBH1UH QOOllBNTS; l=ionic strength, sol kg- 1

log Q I/T 25 C 50 - 75 C 100 C 150 C 200 C 250 C 300 C 0.00 -12.17 -12.01 -11.95 -11.95 -12.10 -12.38 -12.73 -13.13 0.01 -11.91

0.10 -11.5a

0.20 -11.»o

0.50 -11.32

1.00 -11.26

2.00 -11.26

3.00 -11.32

KEFURENCES: 1;5;7;« COMMENTS:

* • * * • » * • * « * • * PHOSPHORUS '•• Aqueous * PHOSPHATES * S o l u t i o n s * re = P8 * D a t a b a s e * S e p t e m b e r 1984 *************

EQUILIBB10M EEACTION: HPOU— + OH- = P04 * H20

TUERMOCHEHICAL PHOPEHIIES:

" c H o , J mo l -1 " S o , J m o l - 1 K-1 "Cpo , J mo l -1 K-1

Ay~z2, (kg mol -1) 1/2 b, kg no 1-1 l o g Ko

- 41065 - 1 0 3 . 0 3 - 2 8 . 7 1

E^uiLiBKIOil Q U O T I E N T S : J > i o n i c s t c c n g t h , » o l k g - 1

l o g Q

I / T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0 .00 1.82 1.25 0.76 0.33 - 0 .39 - 0 .99 - 1.48 - 1.89

0 . 0 1 1 .9*

0 . 10 2. 19

0 .20 2 .27

0 .50 2. 39

1.00 2 .51

2.00 2.S1

J .00 2.89

INFERENCE;;: 1 ; 3 ; 7 ; d

CCJ.IMENTS: J .ugQ(I) c a l c u l a t e d Iroin logKw and i o n i z a t i o n c o n s t a n t s of Hl?04— i t 2 5 c .

PHOSPHORUS References

September 1984

J.W. Larson; K.G. Zeeb; L.G. Hepler: Can. J. Chem. 1982, v. 60, 2141. CODATA Task Group on Key Values for Thermodynamics: COOATA Reconraended Key Values for Thermodynamics 1977, CODATA Bulletin 28, COOATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). D.O. Wagman; W.H. Evans; V.B. Parker; R.H. Schumn; I. Halow; S.H. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Oata 1982, v. 11, Suppl No. 2. J.W. Cobble; R.C. Murray; P.J. Turner; K. Chen: "High-Temperature Thermodynamic Data for Species in Aqueous Solution", NP-2400, San Diego State Univ., San Diego, CA 92182 (May 1982). R.E. Mesmer; C.F. Baes: J. Solution Chem. 1974, v. 3, 307. R.J. Lemire; P.R. Tremaine: J. Chem. Eng. Data 1980, v. 25, 361. G.B. Naumov; B.N. Ryzhenko; I.L. Khodafcovsky: "Handbook of Thermodynamic Data iTranslated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. D.R. Turner; M. Whitfield; A.G. Dickson: Geochim. Cosmochim. Acta 1981, v. 45, 855.

* • * • • • » * • • • * * P L O T O I I U H • A q u e o u s • HIDEOIIDES • S o l u t i o n s * r e » P01 • D a t a b a s e • S e p t e m b e r 1984

EQOILIBBIUH REACTION: Pu02*» • H20 = PU020H* + HI

THER flOCHUMICAL PBOPKBTIES:

~ r H o , J m o l - 1 " S o , J n o l - 1 K-1 " C p o , J n o l - 1 K-1

Ay~z2 , (kg a o l - 1 ) 1/2 t , kg n o l - 1 l o g Ko

45<»30 '14.09

- 1 6 . 2 9 - 1 . 0 2 - 0 . 0 6 - 5 . 6 6

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e a g t h , a o l k g - 1

I / T 25 C

0 . 0 0 - 5 . 6 6

0 . 0 1 - 5 . 7 5

0 . 1 0 - 5 . 9 1

0 . 2 0 - 5 . 9 9

0.. 50 - 6 . 11

1 .00 - 6 . 2 3

2 . 0 0 - 6 . 3 8

3 . 00 - 6.4'-)

50 C 75 C

l o g Q

100 C 150 C 200 C 250 C

5.04 - 4 .52 4 .08 3 .35 - 2 .79 - 2 .35

- 1 .99

fiiifEfcENCES: 1 ; 2 ; U ; 5 : 9

COHMENTS:

* ft^ueous * * S o l u t i o n s * * D a t a b a s e •

PLDTOHUfl ' HrDBOIIDES CC - P02 S « p t e i b e r 1984

EUUiLJBRIUH REACTION: 2PU02** * 2H20 * ( P u 0 2 ) 2 ( O H ) 2 + * • 2H*

THERflOCHEMICAL PROPERTIES:

" r H o , J n o l - 1 " S o , J n o l - 1 K-1 " C p o , J m o l - 1 K-1

A y * z 2 , ( k g n o l - 1 ) 1/2 b , kg mol—1 l o g Ko

58160 36..1S

- 2 2 5 . 5 8 - 1.02

0.21 - 8.30

EQUILIBRIUM QUOTIENTS: I=ionic streogth, «ol kg-1

I/T 25 C 50 C 75 C 100 •:. 150 C - 5.93

200 C -5.61

250 C 300 C 0.00 - 8.30 - 7.55 - 6.97 - 6.53

150 C - 5.93

200 C -5.61 - 5.47 - 5.46

0.01 - 8.39 0.1U - 8.52 0.20 - 8.57 0.50 - 8.62 1.00 - fl.bO 2.00 - B.HB 3.00 - 8.32

flEFERENCES: 1; 2; *•; 3; 9

COI5H..NTS:

************* * Aqueous * * Solutions * * Database *

PLOTOHIUH HIDBOilDES re » P03 Septeafcec 198V

EJUILIBEIUM REACTION: 3Pu02»* » 5H20 = (Pa02) 3 (OH) 5+ * 5H*

THERMOCHEMICAL P80PEBTIES: "rHo, J nol-1 "So, J mol-1 K-1 "Cpo, J aol-1 K-1 Ay*z2, (kg mol-1) 1/2 t, kg »ol-J log Ko

139450 5».»5

- i»07.l*6 - 3.06 0.30

-21.59

EQUILIBHIUS QUOTIENTS: I=ionic strength, lol kg-1

log Q l/'t 25 C 50 C 75 C

0 .00 - 2 1 . 5 9 - 1 9 . 7 6 - 1 8 . 3 2

0 .01 - 2 1 . 8 7

0. 10 - 2 2 . 3 0

0.20 -22 .U8

0 .50 - 2 2 . 7 1

1.00 - 2 2 . 8 2

2 .00 - 2 2 . 7 8

3.00 - 2 2 . 6 3

100 C 150 C 200 C -17.J7 -15.53 -1H.51

2S0 C 300 C -13.89 -13.56

HEFEHENCES: 1;2;4;5;7 COMMENTS:

* • * * * * • • • • • • • PLUTOilOM * A q u e o u s * HIDROXIDES * S o l u t i o n s * r e » P0» * D a t a b a s e * S e p t c a b e c 1 9 8 *

EQUILIHSIOR REACTION: P u * * * * • H20 •= PUQH*** * H+

THERHOCHEM1CAL PROPERTIES:

" c H o , J m o l - 1 : 4 8 2 3 0 " S o , J m o l - 1 K-1 : 1 5 2 - 0 9 " C p o , J n o l - 1 K-1 : - 8 1 . 2 9

A y " z 2 , ( k g » o l - 1 ) 1/2 : - 3 . 0 6 b , k g m o l - 1 : 0 . 2 7 log Ko : - 0 . 51

EQUlLIBhlllfl QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

l o g Q

I / l 25 C 50 C 75 C

0 .00 - 0 .51 0 .1 IS 0.66

0 .01 - 0 .79

0 .10 - 1.22

0-20 - 1.40

0.50 - 1.64

1.00 - 1.77

2 .00 - 1.7b

3.00 - 1.64

100 C 150 C 200 C

1.09 1 .76 2 . 2 3

2 5 0 C

2 . 5 7

UfcTEHENCES: 1 ; 2 ; 4 ; 5 ; 9

COIintMTS:

**••%******** P L O T O M O A * Agueous * HKDBOXIDES * S o l u t i o n s * r e » PUS * D a t a b a s e • S e p t e m b e r 1984 ************* EQOILIBBIOM REACTION: £ « , • + • • + 2H20 = PU(0B)2»* • 2H»

THERMOCHEMICAt PBOPEBTIES:

"rHo, J mol -1 : 7M360 " S o , J a o l - l K-1 : 205 .18 " C p o , J mol- I K~1 : - 1 0 3 . 5 8

A y - z 2 , ( k g mol -1 ) 1 /2 : - 5 . 1 0 b , kg no 1-1 : l o g Ko : - 2 . 3 1

0 . 0 1

LIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

25 C 50 C 75 C 100 C

- 2 .31 - 1.32 - 0 .50 0.18

150 C 200 C

1.2» 2 . 0 1

HEFERKNCES: 1; 2 ; U

COHMKNTS:

* Aqueous * * S o l u t i o n s * * Database *

PLOTomun BIOBOXIDES re * J»D6 sapteabec 198a

EQUILIBRIUM KEACTIOH: Pu»*»* • 31120 = PU (OH) 3* * 3fl»

TUEBHOCHEniCAL PBOPEBTIES:

"CHO, J mol-1 "So, J mol-1 K-1 "Cpo, J mol-1 K-1 Ay"z2,(kg l i o l - l l 1/2 t>, kg o o l - l log Ko

96590 223.27

- 103.87 - 6.12

- 5.26

EQUILIBRIUM QUOTIENTS: I=ionic strength, »ol kg-1

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 - 5.26 - 3.97 - 2.89 - 1.99 - 0.56 0.50 1.30 1.92

1.00 - b.51

2. 00 - 7.0fl

R E F E R E N C E S : 1 ; 2 ; U

CUHHENTS:

************* ptotomuH * A q u e o u s * H7DBOXIDES * solutions * re = P07 * Database • September 1984 •»*•*«*•*••** EQUILIBRIUM REACTION: Pu»+»» • 4H20 = PU(OH)4(ag) • 4H*

TKERNOCUENICAL PROPEBTIES:

r H o , J a o l - 1 . 109120 So, J n o l - 1 K-1 184. 3'» Cpo, J mo l -1 K-1 0.16 A y " z 2 . (kg mol -1) 1/2 . - 6 .12 b, kg n o l - 1 l o g Ko - 9 .50

E Q U I L I B R I U M QUOTIENTS: l = i o u i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 c 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 - 9 .50 - 3 .01 - 6.74 - 5 .64 - 3 .84 - 2 .42 - 1.27 - 0.32

1.00 - 1 0 . 7 7

2 .00 - 1 1 . 31

j . 0 0

DhFEHENLhS: 1 ; 2 ; 4

COflBENTS:

****•***•**•* PLOIOIIDH • Aqueous * arDSOIIDES » Solutions • re • PU8 * Database • Sapteatwr 1984

EQOILIBfilUB BEACT10H: Pu»+»* + 5H20 « Pu(OH)5- • 5H*

THEBHOCHENICAL PBOPEBTIES:

"cHo, J mol -1 : 125650 "So. J niol-1 K-1 : 135.45 "Cpo, J m o l - 1 K-1 : - 3 7 9 . 4 6

A y " z 2 , (kg a o l - 1 ) 1 /2 : - 5 . 1 0 b, kg mo 1-1 : l o g Ko : - 1 4 . 9 4

E3U1L1BK1UH QUOTIEKTS: I ^ i o n i c s t r e n g t h , s o l k g - 1

X / I 25 c

0.00 - 1 4 . 9 4

0 . 10

0 . 2 0

1 . JO

>. J.)

i . ) 1

50 C 75 C

l o g Q

100 C 150 C 200 C 250 C 300 C

-13.30 - 1 2 . 0 0 - 1 0 . 9 8 - 9 . 5 2 - 8 .62 - 8 .09 7.82

KEFEflENCKS: 1 ; 2 ; 4

OUHMENTS:

• • » • * • • * * * * • • PLOIOHOH • Aqueous • HIDROXIDES » S o l u t i o n s * r e = PU9 • D a t a b a s e • S e p t e a b e r 198U

EgUItlBaiOM REACTION: Pu»»» • H20 = ?uOH«* • H*

THEBHOCHEH1CA1 PROPEBTIES:

*i-Ho, J m o l - l : 5 3 2 3 0 " S o , J n o l - 1 K-l : 2 6 . 0 9 " C p o , J a o l - 1 K-1 : - 5 - 2 9

A y " z 2 , (kg m o l - 1 ) 1 / 2 : - 2 - 0 1 b , kg mol -1 : Xog Ko : - 7 . 9 6

EQUlLlBBlUrt QUOTIENTS: I = i o o i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

0 . 0 0 - 7 . 9 6

50 C 75 C

- 7 . 2 * - 6 . 6 3

100 C 150 C 200 C 2 5 0 C

- 6 . 0 9 - 5 . 2 2 - « . 5 « - 3 . 9 9

3 0 0 C

• 3 . 5 4

REFERENCES: 1;2

Cu.lflENTS:

EQUILIBRIUM fiBACTIOM: Pu02*» • F - « PU02P*

PLUTOMION rtUOSIDES re » PU10 Septeabet 1984

IHERMOCJIEMICAL PROPERTIES:

~rHo, J B O I - 1 : - 5 2 5 0 " S o , J mol-1 K-! : 91 .18 "Cpo, J m o l - 1 K-1 : 2 0 2 . 0 0

Ay"z2 , (kg mol-1) 1/2 : - 2 .04 b , kg mol -1 : l o g Ko : 5 . 6 8

E Q U I L I B H I B M Q U O T I E N T S : I = i o n i c s t r e n g t h , l o l k g - 1

I / T 25 C 50 C 75 C

100 C 150 C 200 C 250 C

6 . 6 8

7.07 0 .00

0 . 20

5.6b 5 . 6 4 5 . 6 7 5.74 5 . S 9 6 . 3 1

INFERENCES: 1 ; 2 ; 9

CuHMEHTS:

* * * * • * * * • * * » * PLUIOIIIDH • A q u e o u s • FLUORIDES • Solutions * r e * PB11 • D a t a b a s e * S e p t e m b e r 1984

EQDILIBBIDH REACTION: P u 0 2 » * *• 2 P - » Pu02F2(aq)

THERNOCHEHICAt PfiOPEBTIES:

"rHo, J aol-1 "So, J nol-1 K-1 "Cpc, J mol-1 K-1 Ay-22, (kg mol-1) 1/2 b, kg sol—1 log Ko

- 41700 70.36 233.00

- 3.06

EQUILIBHIUS QUOTIENTS: I=ionic strength, «ol kg-1

I/T 25 C 50 C

0.00 10.98 10.45

100 C 150 C 200 C 250 C

9.79 9.49 9.39 9.15

REFERENCES; 1;2

COMMENTS:

» A q u e o u s * * S o l u t i o n s * * D a t a b a s e *

EQUILIBHIOH HEACTIOM: P u 0 2 * * • 3 F - » PU02F3-

PLUTOKIMH FLOOUDES r o » PU12 S e p t « » b e r 1984

THERMOCHEHICAL PBOPEBIIESS

" r l l o , J m o l - 1 : - 2 9 4 5 0 " S o , J m o l - 1 K-1 : 2 0 6 . 5 0 " c p o . J n o l - 1 K-1 : 8 2 . 0 0

A y ~ z 2 , ( k g B o l - 1 ) 1/2 : - 3 . 0 6 fc, k g n o l - 1 : l o g Ko : 1 5 . 9 5

E Q U I L I B B I U B Q U O T I E N T S : l = i o n i c s t r e n g t h , i a l k g - 1

l/T 25 C 50 c 75 C log Q

100 C 150 C 200 C 250 C 300 C 15.01 14.66 14.43 14.29 14.21 0.00 15.95

0.01 0.10 0.20 0.50 1.00 2.00 3.00

15.56 15.25

REFEHENCES: 1;2 CO"; ENTS:

EaOIlIBHIOa REACTION: Pu02»+ * IP- • PU02P4—

PLOXOUON FLOOBIDES CC « PB13 Septenber 1984

THERNOCHEMICAL PBOPEgTIES:

rHo, J mol-1 : - U0000 So, " -1 K-1 • 225.72 ; , ool-1 K-1 402.00

Ay r.2 . fkg nol-1) 1/2 - 2.04 b, kc nol-1 log Ko 18.79

EQDILIBBIUM QOOTIEHTS: l = i o n i c s t r e n g t h , »ol k g - l

I / T 25 C

0.00 18. Ti

I d . 3 2

hEFEBENCES: 1;2

COMMENTS:

* Ag ueo us * * S o l u t i o n s * * D a t a b a s e * *************

EuOIi-IBBIOM BE&CTIOS: Pu02** • C I - » PB02C1*

PLOTOHIOH CHLOBIDES rc " POIt S«ptOBb«r 1984

IHEBMOCHEMICAi PROPEBTIES:

"rHo, J BOl-1 : 11180 'So. J a o l - 1 K-1 : 35 .27 "Cpo, J n o l - 1 K-1 : 5 5 1 . 0 0

Ay~z2,{kg a o l - 1 ) 1/2 : - 2 .0« b, kg a o l - 1 s log Ko s - 0 .12

log Q I/I 25 C 0.00 - 0.12 0.01 0. 10 0.20 0.50 1.00 2.00 - 0.90 3.00

50 C 0.13

75 C 0.49

100 C 0.95

150 C 200 C 2.0* 3.2 5

250 C 300 C 4.53 5.82

REFERENCES: 1;2 COfldENIS:

* A q u e o u s * * S o l u t i o n s * * fldtabase *

EQUILIBHIDM HEACTION; Pu*»»* * C I - = PuCl*»»

PLUTOMUH CHLOIIDBS r c « PUIS Septeaber 1980

THEHHOCHEHICAL PB0PE8TIES:

* r H o , J D O I - 1 " S o , J o o l - l K-1 *Cpo , J m o l - 1 K-1

A y " z 2 , ( k g m o l - 1 ) 1/2 b, kg no 1-1 l o g Ko

W180 75 .27 455.00 U.08

EQUILIBRIUM QUOTIENTS: l=ionic strength, «ol kg-1

I/I 25 C

0.00 0.92

1.00 - 0. 30

SEFEHENCES: 1;2 conntsis:

* * • * » * • * * * • * • PLUXOKOH * Aqueous * SULFATES . * Solutions * tc • P018 * Database * SaptaabM 1984

EBUILIBBIUB REACTION: Pu02»» » SOU— * PU0230*(ag)

IflEBHOCHENICAL PB0PE8TIES:

"rHo, J aol-1 : 20200 "So, J aol-1 K-1 : 130.17 "Cpo, J nol-1 K-1 : 627.00 ay *2,{kg uol-1)1/2 : - 4.08 fc, kg nol-1 : Log Ko : 3., 25

EQUILIBRIUM QUOTIENTS: l=ionic strength, mol kg-1

100 C 150 C

4.74 6.09

BEFERENCES: 1;2 COHtfENTS:

EQUILIBHIOfl EEACTIOS: Pll**»* • SOt-

PLUTOIIDH SULFATES r c = PU19 September 1964

taSOiitt

THEBNOCHEMICAL PROPBBTIES:

" c H o , J mo l -1 : 12500 "So. J mol-1 K-1 : 152.17 ~Cpo, J B O I - 1 K-1 : 429.00

Ay"z2, (kg B O I - 1 ) 1/2 : - 8.16 b , k g B O 1 - 1 : l o g Ko : 5.75

EQUILIBR1UB QUOTIENTS: I=ionic strength, aol kg-1

log e I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C

9.66 300 C 10.70 0.00

0.01 0. 10 0.20 0.50 1. 00 2.00 J.0U

5.75 5.y9 6.33 6.72 7.63 8.63

BEFEBENCl'S: 1;2 COHMEN1S:

EQUILIBfilOM BEACTIOS: Pu + »* * SO«— = PUS04*

PLOTOHIUA SULFATES r c * P020 S e p t e m b e r 1984

THERMOCHEMICAl EROPKBTIES:

"rHo, J mol-1 : 14400 "So, J n o l - 1 K-1 : 115.17 "Cpo, J m o l - 1 K-1 : 4 5 2 . 0 0

A y " z 2 , ( k g m o l - 1 ) 1 /2 : - 6 - 1 2 fc.kqaol-l : l o g Ko : 3 . 4 8

E Q U I L I B R I U M QUOTIENTS: I = i o o i c s t r e n g t h , a o l k g - 1

I / T 25 C

0 .00 3 . 48

J . 76

100 C 150 C

4 .55 5 .53

200 C 250 C

6.59 7.69

REFERENCES: 1;2

COMENTS:

I.. ************* * Aqueous * • Solutions * • Database * ************* EQUIUBBIOB REACTION: Pu02»* » 2C03— PuO2(C03)2—

PIUTOWUM CA1BOIATES r c = P016 S e p t e a b e r 1981

THEBBOCHEHICAL PBOPEBTIBS:

~ r a o , J B O I - 1 : 26980 - S o , J mol-1 K-1 : 376 .80 " C p o , J m o l - 1 K-1 5 2 1 4 . 0 0

A y - z 2 , ( k g »ol-1> 1/2 : - 4 .08 b, kg a o l - 1 : l o g Ko : 1 4 . 9 5

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , i o l k g - 1

I / T 25 C

0 . 0 0 1 4 . 9 5

0 . 0 1

J. 0 0

50 C 75 C

l o g Q

100 C 150 C 200 C

15.35 1 5 . 76 16.17 1 6 . 9 6 17.73

HEfEttEML'ES: 1;2

COMMENTS:

EQUHIBBIUfl REACTION; Pu»»»* * C 0 3 -

ptoioiiiaN C1H0MTES re - P017 September 1984

PUC03»*

THEBilOCHEBICAL PROPERTIES:

~rHo, J mol-1 : -186960 'so, J ool-l K-1 : 152.90 ~Cpo, J n o l - 1 K-1 : 4 9 9 . 0 0

A y " z 2 , ( k g u o l - I J I / 2 : - 8 . 1 6 b , kg mol -1 : l o g Ko : 4 0 . 7 4

EgoiLIBKlUM QUOTIENTS: I = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

1/X 25 C

0 . 0 0 4 0 . 7 4

3 3 . 2 9

34 .76

32 .49

2 0 0 C

3 1 . 0 2

30 .10

2 9 . 5 5

BEFEBENCES: 1:2

COMMENTS:

• A.JUGOUS * • solutions * • Database •

pLaioiinu ions re « P034 Dacaabec 198U

EQUILIBRIUM BEiCTlOH: *PU02*» • 2H20 = UPu02» • US* * 02(9)

THERNOCHEHICM. PBOPEBTIES: "rHo, J nol-1 : 202060 "So, J aol-1 K-1 : 333.22 "Cpo, J «ol-1 K-1 : 226.78 Ay"z2, (kg «ol-1) 1/2 b, kg no 1-1 log Ko : -17.99

EQUILIBfilOH QUOTIENTS: I=ionic strength, iol kg-1

log Q I/T 25 C 0.00 -17.99 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C -15.22 -12.77 -10.60 - 6.89 - 3.81 - 1.20 1.05

EEFEREMCES: 2; COMMENTS;

PL0TOH0I I0V5 tc » POJ3 Dacaabac 198 It

EOUILIBBION BE4CTI0M: 2PU02+* » 4H* » 2Pu>**» • 2H20 * 0 2 ( 4 )

THBRBOCHEMICAt PBOPEBTIES:

"rHo, J a o l - 1 : - 6 0 "SO, J 101-1 K-1 : - 2 5 7 . 1 t - C p o . J mol -1 K-1 : 31.9*

Ay"z2, (kg a o l - 1 ) 1/2 : b . Kg a o l - 1 : l o g Ko : - 1 3 . 4 2

EQU1LIUBIUB Q U O T I E N T S : X = i o n i c s t x e a g t h , a o l k g - 1

l o g Q

I / T 25 C

0 .00 - 1 3 . « 2

0 . 0 1

- 1 3 . « 2

-13.110

- 1 3 . 3 8

•13 .33

- 1 3 . 2 7

250 C 300 C

- 1 3 . 2 0 - 1 3 . 1 3

REFEaENCBS: 2 ;

COMMENTS:

* Aqueous * * Solutions * * Database * *«*•*»**»*»»*

PLOIOHIOH IOIS r c » P032 D e c e a b e r 1984

EQUIIXBBiaH REACTIOK: 4Pu02*» • 4 8 * - 4Pa»»+ f 2H20 • 3 0 2 ( 9 )

TflERflOCHEMCAL PROPEBTIES:

"rHo, J » o l - 1 : 3 4 9 1 4 0 " S o , J a o l - 1 K-1 : 3 7 0 . 9 4 " C p o , J n o l - 1 K-J : - 4 9 . 3 4

A y * z 2 , (kg a o l - 1 ) 1/2 b, kg a o l - 1 l o g Ko : - 4 1 . 7 9

EQUILIBRIUM QUOTIENTS: i - i o n i c s t r e n g t h , a o l k g - 1

I / T 25 C 50 (. 75 C

l o g Q

100 C 150 C 200 C

0.00 - 4 1 . 7 9 - 3 7 . 0 6 - 3 3 . 0 3 - 2 9 . 5 6 - 2 3 . 8 6 - 1 9 . 4 0

- 1 5 . 8 2

- 1 2 . 8 9

REFERENCES: 2 ;

COBHEIirS:

ft************ * Aqueous * * Solutions * * Database *

ptoiomon OXIDIS CC " M 2 5 Daccabac 1984

EQUILIBBIUH BEACTION: 2Pu02 ( s ) * «H» + 0 2 ( g ) * 2J?U02*+ * 2H20

TBEBHOCHESICAL PB0PEBT1ES:

" cHo . J a o l - 1 : - 103411 'So, J n o l - 1 K-1 : -373 .HB "Cpo, J mol—1 K-1 10.72

Ay"z2,<kg a o l - 1 ) 1/2 h, kg a o l - 1 log Ko - 1.39

EQiULlOfilU.l QUOTIENTS: I = i o n i c s t c e n g t h , a o l k g - 1

1/1 25 C

o.oo - 1.39

l o g Q

50 C 75 C 100 C 150 C 200 C

- 2 .79 - 3 .99 - 5 .02 - 6 . 7 1 - 8 .0«

- 9 . 1 1

- 9.9"

nt fEBtNCES: 2 ;

L ' I K M E N T S :

PiOTOIIOH OXIDES re = P039 December 1980

GQUILIBBIUH BEACTION: 2 P u 0 2 ( s ) * 0 2 ( g ) * 2B20 = 2Pu02 (0H)2 (S)

THEBHOCHEHIC?_ PBOPEBTIES:

"rHo, J n o l - 1 ; - 5 4 3 9 5 "So. J s o l - 1 K-1 : - 3 4 4 . 3 0 "Cpo, J mo 1-1 K-1 : 62 .38

Ay~z2, (kg a o l - 1 ) 1/2 : b, kg tno l -1 : l o g Ko : - 8 .46

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e a g f c i i , » o l k g - 1

I / T 25 C

0 . 0 0 - B .46

2. 0 0

3 . 0 0

50 C 75 C

100 C 150 C 200 C 2 5 0 C

9.19 - 9 .79 - 1 0 . 1 0 - 1 1 . 1 0 - 1 1 . 6 9 - 1 2 . 1 3

- 1 2 . 4 7

INFERENCES: 2

COBHENTS:

PbOTOKOH OXIDES EC * HJ24 i )ac«ab«r 1984

EQUILIBfllUB fiEACTIOH: 4PU02(S) » 4H» * 0 2 ( g ) * 4 P n 0 2 * * 2H20

THERMOCJEMICAt PFOPBRTIES:

"Clio, J n o l - 1 " S o , J mo l -1 K-1 "Cpo, J o i o l - l K-<

A y " z 2 , ( k g BOl-1) 1 /2 fc, kg m o l - 1 l o g Ko

- 4815 - 4 1 3 . 7 4

248.22

- 2 0 . 7 7

l o g Q

l / x 25 c

0 . 0 0 - 2 0 . 7 7

0 . 10

J . 0 J

50 C 75 C

- 2 0 . 7 9 - 2 0 . 7 4

too c 150 C 200 C 250 C 300 C 20.63 -20.31 -19.89 -19.42 -18.92

REFERENCES: 2;

CCHHEHIS:

* Aqueous * « Solutions «• * Database »

PLUSOHIOH OXIDES re = PU38 December 1964

EQUILIDflllM BGACTION: 4Pu02 ( s ) * 0 2 ( g ) * 2H20 = 4PU02 (OH) (S)

THEBtlOCHEtUCAL PBOPEHTISS:

" r H o , J m o l - 1 : 164328 " S o , J m o l - 1 K-1 : - 2 6 1 - 3 8 ~ C p o , J m o l - 1 K-1 : - 1 0 0 . 9 4

A y ~ z 2 , (kg mo l -1 ) 1/2 b , kg u o l - 1 l o g Ko : - 4 2 . 4 4

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , » o l k q - 1

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 -42.44 -40.23 -38.36 -36.78 -34.22 -32.28 -30.75 -29.54 0.01

BEFEfiENCES; 2 ;

COtlHENTS:

***•**•*»*•»» PLOTOIIOa * Aqueous * OXIDES » Solutions * re * P029 * Database * Deceabec 1984

EQOH.IBBIUH BEACTION: Pu02 <s) • KB* = Ba*t** * 2 8 2 0

THERH0CHE8ICAL PBOPEHIIES:

~ c H o , J m o l - 1 " S o , J m o l - 1 K-1 " C p o , J m o i - 1 K-1

A y " z 2 , (kg a o l - 1 ) 1 / 2 b, kg n o l - 1 l o g Ko

- 5 1 8 6 8 - 3 1 5 . 3 1

2 1 - 3 3

EtfUIlIBBIUfl QUOTIENTS; I = i o n i c s t r e n g t h , « o l k g - 1

log Q I/T 25 C 0.00 - 7.3B 0.01 0. 10 0.20 0.50 1.00 2.00 3. 00

50 C 75 C 100 C 150 C 200 C 250 C 300 C - 8.08 - 8.67 - 9.18 -10.01 -10.6U -11.14 -11.55

REFERENCES: 2; COMMENTS;

PLOTOIIDH OXIDES ro « P023 Oeceaber 1984

EQUILIBBIUM BEACTI08: 4PU02 (s) • 12H* = 4PU«»» » 6H20* 02(g)

THERHGCHEHICAL PBOPEBTIES:

"rHo, J nol-1 : 142716 "So, J mol-1 K-1 : -376.02 "Cpo, J mol-1 K-1 : - 27.89 Ay~z2,(kg nol-1) 1/2 b, kg mol-1 log Ko : -44.64

E Q U I L I B B I U H QOOliEHTS: I=ioaic strength, aol kg-1

I/T 25 C

2.71 -44.64

-42.71

-41.07

-39.65

-37.33

-35.53

250 C 300 C

-34.08 -32.90

BKPEKENCES: 2;

COMMENTS:

• * • * * * * * * * • • * PLUTOBIOH * Aqueous * OZIDBS * S o l u t i o n s » c o * P036 * D a t a b a s e * D e c e a b e c 1984

EQUILIBBIUH REACTIOH: P u 0 2 ( s ) * 2H20 - P n { O H | a ( s )

THEBHOCHENICAL PBOPEBTIES:

"rHo, J « o l - 1 ~ S o , J a o l - 1 K-1 " C p o , J B O I - 1 K-1

A y ~ z 2 , (kg « o l - 1 | 1 /2 b , kg n o l - 1 ' l o g Ko

16756 98.95

- 8.10

EQDILIBBIUH QDOTIENTS: I=ionic strength, «ol kg-1

I/T 25 C

0.00 - 8.10

50 C 75 C 100 C 150 C 200 C

- 7.89 - 7.73 - 7.62 - 7.48 - 7. l»3

250 C 300 C

- 7.<t3 - 7.U7

REFERENCES: 2; C0MHENTS:

(. * * * * * * * * * * * * * PLDT01IIUH * Aqueous * OXIDES * Solutions * r e = PU37 * D a t a b a s e * December 1984

EQUILI8BIUM BEACTIOH: 4 P u 0 2 ( S ) = 2PQ203 ( s ) * 0 2 ( g )

THEHflOCHEMCAl PBOPEBTIES:

" r H o , J B O I - 1 " S o , J B O I - 1 K-1 " C p o , J BO 1-1 K-1

A y " z 2 , (kg « o l - 1 ) 1/2 b , k g n o l - 1 l o g Ko

861996 194.52 11.84

I / T 25 C

0 . 10

50 C 75 C

l o g Q

100 C 150 C

- 9 6 . 2 0

- 8 4 . 9 4

250 C 300 C

- 7 5 . 8 2 - 6 8 . 2 8

HEFERENCES: 2 ;

COMMENTS: l o g Ko = - 1 40. 84 (25cJ ; - 1 2 9 . 16 (50c) ; - 1 1 9 . 15 (75c) ; - I 1 0 . 4 8 ( 1 0 0 c ) ;

************* * Aqueous * * Solutions * * Database * **•••••*•*•*•

PLOTOHUH OIIDSS rc * P035 Deceabec 1984

EQUILIBKIOfl BBACTIOH: <4Pu02(S) * 6B20 = 4Pu(OB)3(S) • 0 2 ( g )

THERMOCHEHICAL PBOPEETIES:

~r f lo , J mol -1 * s o , J a o l - 1 K-l ~Cpo, J n o l - 1 K-1

A y ~ z 2 , (kg « o l - 1 ) 1 /2 b , kg n o 1 - 1 l o g Ko

7 3 3 6 9 7 - 1 1 0 . 9 4 - 6 6 7 . 3 9

EQD1LIBSIDM euoTlEBTSi I = i o n i c s t r e n g t h , » o l k g - 1

-98.26 -69.99 1/1 25 C 50 C 75 C 100 C 150 C 200 C 0.00 0.01 0. 10 0.20 O.bO 1.00 2.00 3.00

250 C -83.65

300 C -78.71

REFEHENCES: 2; COMMENTS: log Ko = -a34.32(25c); -124.49 (50c) ; -116.26 (75c) ;

-109.30(100c) ;

» Aqueous * * Solutions * * Database *

EQUILIBRIUM REACTION: Pu203(S) • 6H* * 2PU**+ * 3H20

PLoromua OIIDES r e = P028 D e c e a b e r 1984

THERHOCHEMICAL PROPERTIES:

"rHo, J a o l - 1 : - 3 5 9 6 4 0 " S o , J mo l -1 K-1 : - 2 8 5 . 2 7 "Cpo, J mol -1 K-1 J - 1 9 . 8 7

A y ~ z 2 , (kg m o l - 1 ) 1 /2 b . Kg mol -1 l o g Ko : 4 8 . 1 0

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , a a l k g - 1

l o g Q

I / T 25 C

0.00 48 .10

0 . 0 1

0 . 10

2 . 0 0

J . 00

50 C 75 C 100 C 150 C 200 C

43.22 3 9 . 04 35 .U1 29 .43 24 .70

2 0 . 8 7

1 7 . 6 9

BEFEHENCES: 2 ;

COMfjENTS:

************* * Agueous * * Solutions * * Database * *************

PLOTOMUH HX0BOXI0ES EC = PU31 December 198V

EUUILIDBIOH REACTION: Pu02 (OH) 2 (s) • 211+ = Pu02*» • 2H20

THERNOCHEMICAL PROPERTIES: ~rHo, J mol-1 "So, J nol-1 K-l "Cpo, J mo 1-1 K-1 Ay*z2, ikg mol-1| 1/2 b, kg BO 1-1 log Ko

35715 52. i a 49.56

EQUILIBKIIJH QUOTIENTS: I=ionic strength, aol kg-1

I/T 25 C 0.00 3.53 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 3.0b

75 C 2.66

log Q 100 C 150 C 2.33 1.82

200 C 1.46

250 C 1.18

300 C 0.98

REFERENCES: 2; COMMENTS:

* * * * * * * * * * * * * PLOTOHIUfl * Aqueous * HYDROXIDES * Solutions * re = PD30 * Database * Decenber 1984 * * • « : • * * * • * * * * EQDH.IBBIUH KEACIION: Pu02(0H) ( s ) * B* = PU02* • H20

THEHNOCHEMICAl i»BOPEBTIES:

"rHo, J mol -1 : - 112286 " S o , J a c i l - 1 K-1 : - 3 8 . 0 9 "Cpo, J m o l - 1 K-1 : 8 7 . 2 9

Ay~z2, (kg n o i - 1 ) 1/2 b, kg i o 1-1 l o g Ko : 5 . « 2

EQUILIBRIUM QDOTIEHTS: I = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

I / T 25 C

0 . 0 0 5 . 4 2

0 . 10

0 . 2 0

0 . 5 0

150 C 200 C

3 .48 3 .10

KEFEBENCES: 2 ;

C0H1ENTS:

•*•*»**•«»*** PLOTOIIUH * Aqueous * HIDHOXIDES * Solutions * EC • PU27 * Database * December 1984

EQUILIBBIUH BEACTIOM: Pu (OH) 4 (s) • 1H+ = Fu**** • UH20

~rHo, J mol-1 : - 6862U "So, J nol-1 K-1 : -216.36 ~Cpo, J mol-1 K-1 : 107.16

A y " z 2 , (kg n o l - 1 ) 1 /2 b , kg a o l - 1 l o g Ko : 0 . 7 2

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

I/T 25 C

0.00 0.72

3. -JO

50 C 75 C 100 C 150 C 200 C

- 0.19 - 0.9U - 1.56 - 2.52 - 3.21

250 C 300 C

- 3.71 - U.07

BEFEBENCES: 2;

COMMENTS:

• * * * • • • • * • • * * ELOXORIDH * Aqueous * BIDBOXILES * So lut ions * re » PU26 * D a t a b a s e * December 198*

EQDILIBBiaN REACTIOK: Pu(OH)3(S) • 3H» = Pu*»* + JH20

THEBHOCHEHICAL PBOPEBTUS:

"cHo, J BOl-1 : - 1 4 7 7 4 5 " S o , J n o l - 1 K-1 : - 6 6 . 2 7 - C p o , J n o l - 1 K-1 : 5 9 . 8 7

A y _ z 2 , (kg B O I - I J 1 /2 b , kg « o l - 1 l o g Ko : 2 2 . 4 2

EQUllXBniOM QUOTIENTS: l = i o n i c s t r e n g t h , » o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C

0.00 22.42 20.43 18.74 17.29 14.95 13.14

REFEBENCES: 2;

COMMENTS:

************* * Aqueous * * Solutions * * Database * ************* EQUILIBSIUH REACTION: PuPH (s) = Pa***+ • W-

PLOSOSIOB rmomoEs r e » P022 Deceabec 1984

IHEKMOCHEHICAL PHOPEfiTIES:

" r H o , J n o l - 1 " S o , J a o l - 1 K-1 "Cpo , J mo l -1 K-1

A y ~ z 2 , (kg n o l - 1 ) 1/2 b , kg mo 1-1 l o g Ko

-100216 -589.02 - 667.25

•13 .21

EQUILIBBIilM QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

l o g Q

I /T 25 c

0.00 - 1 3 . 2 1

0 . 0 1

50 C 75 C 100 C 150 C 200 C

- 1 4 . 6 8 - 1 6 . 1 3 - 1 7 . 5 5 - 2 0 . 3 0 - 2 2 . 9 1

2 5 0 C 300 C

- 2 5 . 3 7 - 2 7 . 6 9

REFERENCES: 2 ;

COMMENTS:

* Aqueous • * Solutions * * Ddtabase •

EQUILIBBIOH BEACTIOB: PuF3(s) * Pu*** *3T-

FLOIOIIIUR FLUOBIDES EC » P021 Caceaber 1984

THERHOCHEHICAL PROPERTIES: "rHo, J aol-1 "So, J mol-1 K-1 *Cpo, J aol-1 K-1 Ay~z2,(kg aol-1) 1/2 b, kg aol-1 log Ko

- 46095 -349.64 - 519.60

-10.19

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 -10.19 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

-10.90 -11.66 -12.44 -14.06 -15.67 -17.25 •18.78

REFERENCES: 2; OHNFNTS:

PLUTONIUM Reference's June 1984

J. Fuger; F.L. Oetting: The Chemical Thermodynamics of Actinide Elements and Compounds. Part 2. The Actinide Aqueous Ions .International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). R.J. Lemire; P.R. Tremaine: 0. Chem. Eng. Data 1980, v. 25, 361. K.L. Nash; J.M. Cleveland: Radiochim. Acta 1983, v. 33, 105. C.F. Baes; R.E. Mesmer: The Hydrolysis of Cations, John Wiley & Sons, Inc., New York (1976). C.F. Baes; R.E. Mesmer: Am. J. Sci. 1981, v. 281, 935. A.S. Solovkin; V.n. Rubisov: Radibkhimiya 1983> v. 25, 625. U. Schedin: Acta Chem. Scand. 1975, v. A29, 333. J.C. Sullivan; M. Woods; P.A. Bertrand; G..R. Choppin: Radiochim. Acta 1982, v. 32, 45. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). This work. E.H.P. Cordfunke; P.A.G. O'Hare: "The Chemical Thermodynamics of Actiniae Elements and Compounds. Part 3. Miscellaneous Actinide Compounds", International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (January 1978).

«**•»••*••*•* SILICOI * Aqaeous * iCIOS * S o l u t i o n s * re » SI1 * Database * S e p t u l a ? 398*

EQUILIDSIOH BMCTXOH: Si(OS)4(aq) = SiO(OH) 3 - » B*

THEBHOCKEHICil PB0CEBTIE5:

"rHo, J ao l -1 : 25630 "So, J MOI-1 K-1 z - 1 0 2 . 1 6 "cpo, J a o l - 1 K-J : - 174.42

Ay _ z2 , (kg ao l -1 ) 1/2 : 1.02 b, . ; ao l -1 : - 0 . 0 6 l o , RO : - 9 .83

EQUILIBBIUK QUOTIEH1S: l * i o n i c s t r e n g t k , ao l fcg-1

1/T 25 C

0.00 - 9 .83

0.01 - 9.74

0.10 - 9 .59

0.20 - 9 .53

0.50 - 9.44

1.00 - 9.38

2 .00 - 9.35

3 .00 - 9.36

50 C 75 C

100 C 150 C

- 9 .05

9.28 - 9.14 - 9 .00

8.99 - 8 .80 - 8 .55

8.74 - 8.52 - 8 .20

- 9 .00

- 9 . 1 0

- 9 .25

8.45 - 8 .47 - 8 .57

7 .88 - 7 .78

8 .77 - 8 .53 - 8 . 1 3 - 7 .82 - 7 .55 7 .24

&EFEBENCE3; 5

COBHEHIS: Smoothed values froa Ref. 5.

• * * • * * » • * * * * • SIUCOM • igneous * ACIDS » Solutions * EC * SI2 * Database • Septeabec 1984

EUUILIBEID8 HEaCTIOH: Si (OB) H (ag) * OB- = SiO (OH) 3- + H20

IHEEHOCHEHICiL PROPERTIES:

"rHo. J aol-1 J - 30175 "So, J aol-1 K-1 J - 21.5« "Cpo, J nol-1 K-1 : 38.67 Ay*z2, (kg aol-1) 1/2 : 0.00 b, kg sol-1 : log Ko : ». 17

EQUILIBBIOH QOOTIENTS: I=ionic strength, aol kg-1

250 C I/T 25 C

«. 17

3.l»l»

200 C 250 C 300 C

«. 17

3.l»l»

2.75 2.15 2.23 2.08

0.20 0.50 a.29 3.89 3.56 3.29 2.86 2.56 2.33 2.17

1.00 4.37 3.96 3.63 3.35 2.92 2.61 2.37 2.20

3.00 <*. 57 «. 15 3.81 3.52 3.06 2.72 2.H5 2.2«

REFERENCES: 5

COHHEKTS: Smoothed values froa Ref. 5.

SILICON References June 1984

D.O. Hag.nan; U.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data".Translated by G. J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974), PB-226 722, NTIS. R.A. Robie; B.S. Hemingway; J.R. Fisher: "Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (100,000 Pascals) Pressure and at Higher Temperatures"; Geological Survey Bulletin 1452; U.S. Government Printing Office; Washington, DC 20402 (1978). R.M. Smith; A.E. Hartell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). R.H. Busey; R.E. Mesmer: Inorg. Chem. 1977, v. 16, 2444. S.L. Phillips; L.F. Silvester: High Temperatures -High Pressures 198<t, v. 16, 81. R.E. Mesmer: Private Communication, September 1984. CODATA Task Group on Key Values for Thermoaynamics: CODATA Recommended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). P. Richet; Y. Bottinga; L. Denielou; J.P. Petitet; C. Tequi: Geochim. Cosmochim. Acta 1982, v. 46, 2639. B.A. Robinson: "Quartz Dissolution and Silica Imposition in Hot Dry Rock Geothermal Systems", LA-9404-T, Los Alamos National Laboratory, Los Alamos, NM 87545 (July 1982).

W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New York (1979).

snomua BYMHUIDIS re » 512 Saptaabar 198*

EQOILIBBIOH HEACIION: ST** * H20 » ScOB* * H*

THEBHOCHEKICAL PBOPEBTIES: rHo, J nol-1 : 65760 So, J » o l - 1 K-1 - 32.21 Cpo, J MOl-1 K-1 Ay"z2,Ikg a o l - 1 ) 1 / 2 - 1.02 b, kg mol-1 0.22 log Ko - 1 3 . 1 2

EQUILIBBIUB QUOTIEBTS: I=ionic strength, aol kg-1

log Q I/T 25 C 0.00 -13.12 0.01 -13.21 0. 10 -13.31 0.20 -13.39 0.50 -13.43 1.00 -13.41 2.00 -13.28 3.00 -13.11

50 C 75 C 100 C 150 C 200 C 250 C 300 C

BEF3BENCES: 1j«;6;8 COHHEHTS:

EgaiLIBBIOB REACTION: Sr** • OH- = SrOH*

SIBOHTIDH BYDBOIIDES re = SB1 Septeabec 1984

THEBMOCHEMICAL PBOPEBTIES:

rHo, J BOI-1 9955 So, J BOl-: K-1 48.41 Cpo, J aol-1 K-1 *y~z2»(kg nol-1) 1/2 : - 2.04 b, kg no1-1 0.51 log Ko 0.87

EQUILIBRIUM QUOTIENTS: I=iooic strength, nol kg-1

I/T 25 C

0.00 0.87

0.01 0.69

0. 10 C.43

0.20 0.34

0.50 0.28

1.00 0.36

2.00 0.69

3.00 1. 11

50 C 75 C 100 C 15C C 200 C 250 C 300 C

BEPEBENCES: 1;4;6;8

COMMENTS:

EQUILIBRIUM REACTION: Sr»* • F- = Srf*

STIOITIOH rtnoiiDis CC • SR3 Sapt«lb«c 1984

THBRHOCHBMICAL PROPERTIES: "rHo, J mol-1 "So, J aol-1 K-1 "CpO, J' BOl- 1 K-1 &y~z2, (kg nol-1) 1/2 b, kg nol-1 log Ko

- 2.01 0.08 1.04

EQUILIBRIUM QUOIIENTS: I=ionic strength, moi kg-1

log 0 I / T 25 C

0 .00 1.04

0 .01 0 .86

0 .10 0.56

0 .20 0 .43

0 .50 0 .24

1.00 0 . 10

2 .00 0 .00

3.00 - 0 . 0 1

50 C 75 C 100 C 150 C 200 C 250 C 300 C

SIBONTIDM CHLORIDES rc = Sfi« September 1984

EQDILIBEIUH REACTIOH: Sr*» » 2C1- = SrC12(aq)

THEBHOCHEMICAL PBOPEBTIES: rHo, J mo 1-1 60 s o , J i o l - 1 K-1 U.tu cpo, J i o l - 1 K-1 Ajr-z2. (kg mol-1) 1/2 . - 3.06 b, kg ao l -1 log Ko - 0.01

KQ01LIBBI0M QUOTIENTS: I=ionic stcength, «ol kg-1

log Q I/T 25 C 0.00 - 0.01 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

50 C 75 C 100 C 150 C 200 C 250 C 300 C

EEFEHENCES: 1;4;7 COMMENTS:

»»*»»•»*»*•#* • Agueous * • Solutions * • Database * *************

SXBOMTIUH SULFATES rc - S«7 SoptwiMC 1984

EQUILIB8IUN HEACTION: Sr»+ * SOU— « SrSIK(aq)

THrrSOCHElllCAt PROFEBTIES: "rHo, J mol-1 : 10330 "So, J aol-1 K-1 : 73.57 *"Cpo<. J »ol-1 K-1 : Ay"z2,(Kg «ol-1) 1/2 : - 4.08 b, kg no 1-1 : 0.56 log Ko : 2.09

ESOILIBEIUM QOOTIEHTS: I=ionic strength, aol kg-1

log C I / T 25 C

0 .00 2 .09

0 .01 1.72

0 .10 1.17

0 .20 0.94

0. SO 0.68

1.00 0 . 6 1

2-00 0.82

3.00 1 . 18

50 C 75 C 100 C 150 C 200 C 250 C 300 C

KEFEBENCES: U;6 COMHENTS:

• Aqueous * • Solutions • * Database •

EOUILIBRIOH REACTION: Sr»* * HC03- = SrHC03*

SIROMTIOS BICABBOHATBS re = SR5 September 1984

IHERHOCHEHICAL PROPERTIES: "rHO, J «ol-1 "So, J mol-1 K~1 "Cpo, J «ol-1 K-1 Ay*z2,<kg aol-1) 1/2 b, kg mol-1 log Ko 1.26

EQOILIBBIUH QUOTIENTS: I=ionic strength, aol kg-J

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 1.26 0.01 0.10 0.20 0.50 1.00 2.00 1.00

REFERENCES: 6 COHHENTS:

• Aqueous * • solutions • • Database *

STIOIXIOH CAKBOIAIBS CC » SR6 Sapteaber 19B*

EQUILIBfilUM HEACTION: S r » » * C 0 3 — = S r C 0 3 ( a g )

THBRHOCHEHICAL PBOPEHIIES: " rHo , J a o l - 1 "So, J a o l - 1 K-1 "Cpo, J a o l - 1 K-1 Ay"z2,<kg nol-1) 1/2 b, kg aol-1 log Ko

14890 125.00

EQUlLlBBIDtl QUOTIENTS: I=ionic strength, iol kg-1

log Q I/T 0.00 0.01 0. 10 0.20 0.50 1.00 2.00 3.00

25 C 3.92

50 C 75 C 100 C 150 C 200 C 250 C 300 C

HEFEBEHCES: 6 COHHENTS:

STRONTIUM References June 1984

O.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.M. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Data".Translated by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (January 1974). PB-226 722, NTIS. R.A. Robie; B.S. Hemingway; J.R. Fisher: "Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (100,000 Pascals) Pressure and at Higher Temperatures", Geological Survey Bulletin 1452, U.S. Government Printing Office, Washington, DC 20402 (1978). R.M. Smith; A.E. Martell: Critical Stability Constants. Vol .4: Inorganic Complexes, Plenum Press, New York (1976). W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New York (1979). F.J. Millero; D.R. Schreiber: Am. J. Sci. 1982, v. 282, 1508. R.M. Izatt; D. Estough; J.J. Christensen; C.H. Bartholomew: J. Chem. Soc. 1969, 47. C.F. Baes; R.E. Mesmer: Am. J. Sri. 1981, v. 281, 935. L.R. Morss; C.W. Williams: J. Chem. Thermodynamics 1983, v. 15, 279.

10. This work. 11. M.W. Chase; J.L. Curnutt; R.A. McDonala; A.N. Syverua: J. Phys. Chem.

Ref. Data 1978, v. 7, 793. 12. M.W. Chase; J.L. Curnutt; H. Prophet; R.A. McDonald; A.N. Syverud: J.

Phys. Chem. Ref. Data "1975, v. 4, 1. 13. E.J. Reardon: Geochim. Cosmochim. Acta 1983, v. 47, 1917. 14. J.W. Bixler; A.M. Bond: Inorg. Chem. 1978, v. 17, 3684. 15. L.R. Morss; C.W. Williams; l.K. Choi; R. Gens; J. Fuger: J. Chem.

Thermodynamics 1983, v. 15, 1093. 16. E. Busenberg; L.N. Plummer; V.B. Parker: Geochim. Cosmochim. Acta 1984,

v. 48, 2021. 17. A.S.Monaenkova; G.I. Alekseev; A.F. Vorob'ev: Russ. J. Phys. Chem. 198J,

v. 57, 1323.

* Aqueous * " Solutions * • Database ft

SUUILIBRZON REHCTION: H2S (g) = H2S(a<jJ

sutroa SULFIDES EC » S7 Septeabec 193d

THERHOCHEHICAL PROPERTIES; * r H o , J m o l - 1 : - 19070 " S o , J m o l - 1 K-1 : - B 4 . 7 9 " C p o , J M O I - 1 K-1 : 1 4 4 . 2 7

A y " z 2 , (kg n o l - 1 ) 1/2 b , kg » o l - 1 l o g Ko : - 1 . 0 9

EQUILIBHiaa QUOTIENTS: I = i o n i c s t r e n g t h , n o l k g - 1

I / T 25 C 50 C 75 C

l o g Q

100 C 150 C 200 C

1.09 1.32 1.48 1.58 - 1 . 66 1.63

- 1.53

- 1.38

BEFEHENCES: 1 ; 2 ; 4

COMMENTS:

EQUILIBRIUM REACTION: 502 (ag) = S02(g)

SULFOB SULFITES rc = S3 September 1984

THEBHOCHEHICAL PB0PERTIE3:

"cHo, J a o l - 1 : 215150 " S o , J n o l - 1 K-1 : 8 6 . 3 2 ~Cpo, J mol-1 K-1 : - 155.13

A y " z 2 , (kg mol -1) 1 /2 : b, kg no 1-1 : l o g Ko : - 0 . 0 7

•JQUILIBHIUB QUOTIENTS: I=ionic strength, mol kg-1

I/T 25 C

0.00 - 0.07

0„50

1.. 00

HEFEHENCES: 1;D

COMMENTS:

•***•»***•*•* SULFUR * Aqueous * SULFATES * Solutions * re » SI * Database * Sapteaber'1984 ************* EQUILIBBIUtl REACTION: HSO«- • OH- = SOI— • H20

THEBNOCHENICAL PBOPERTIES: ~vHo, J aol-1 : - 78065 "So, J aol-1 K-l : - 34.86 ~Cpo, J EOI-1 K-1 : - 86.71

Ay~z2, (kg a io l - l l 1/2 ; 1.02 b, kg a o l - 1 i log Ko : 11.85

EauiLlBBlUH QUOTIENTS: I=ionio strength, aol kg-1

log Q I/T 25 C 0.00 11.85 0.01 0. 10 0.20 0.50 1,00 2.00 3.00

50 C 10.7B

100 C 75 C 9.83 9.00

150 C 200 C 250 C 7.57 6.38 5.37

300 C 4.51

REFERENCES: 1;3. COMMENTS:

* Aqueous * * Solutions * » Database *

KQUILIBEIOH REACTION: BS04- = S04— » 3+

SOLFUB SULFATES re = S2 Septeabec 1984

THEHHOCHEflICAL PBOPEBTIESJ

"rHo, J mol -1 ! - 2 2 2 6 0 ~ S o , J B O I - 1 K-1 : - " 1 5 . 4 8 "Cpo, J n o l - 1 K-1 : - 3 0 0 . 0 0

A y ~ z 2 , (kg a o l - 1 ) 1 /2 : 2 . 0 4 b , kg m o l - 1 : - 0 - 1 0 l o g Ko : - 2 . 1 3

EQDILIBBIUn QUOTIENTS:

I/T 25 C 0.00 - 2.13

0.01 - 1.95 0.10 - 1.65 O.20 - 1.52 0.50 - 1.33 1.00 - 1.21 1.00 - 1.13 3.00 - 1.14

50 C - 2.46

I=ioaic strength, aol kg-1

iog Q 75 C 100 C 150 C 200 C - 2.87 - 3.28 -4.14 - 5.01

250 C 300 C -5.88 - 6.73

• • • * * • * * • * * * * SOLFOB * Agueous * SULFITES * S o l u t i o n s * cc «• S4 * Database * Septeabur 19S«

EQUILIBHIUH REACTION: H20 f S02(ag) • OH- * HS03- • H20

THEBflOCHEBICAL PBOPEBTIES;

" tHo , J EOX-1 : - 73215 "So, J a o l - 1 K-1 ! - 11.88 "Cpo, J moI-1 K-1 : - 89.71

Ay~z2, (kg mol-1) 1/2 b , kg a o l - 1 log Ko : 12.20

EQUILIBBIUH QUOTIENTS: I = i o n i c s t r e n g t h , « o ! kg-1

I / T 25 C 50 C 75 C 100 C 150 C 200 C 250 C

5.2a 0.00 12.20

0 . 0 1

11.19 10.31 9.52 8.16 7 . 0 3

REFERENCES: 1 ; 2 ; 5

COMMENTS:

************* * Aqueous * * So lu t ions * * D a t a b a s e * * * « * • • • * * • • • • EQUILIBRIUM EEACTION: 502 (ay) + H20 = BSOJ- • H*

SULFUfi SULFITES r c = S12 O c t o b e r 1984

THEKMOCHEHICAL PBOPEBTIES:

"rHo, J mol-1 "So, J mol-1 K-1 *Cpo, J aol-1 K-1 Ay-z2, (kg nol-1) 1/2 b, kg iol-1 log Ko

- 17*10 - 92.11

2d0.29 1.02

- 1.76

EQUILIBBIOH QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

25 C 50 C 75 C 100 C 150 C 200 C

- 1.76 - 2.04 - 2.37 - 2.72 - 3.1*6 - 4.23

250 C 300 C

- 5.01 - 5.77

KEFEBENCES: 13.

COMMENTS; fief. 13 gives ~cGo = 10600; "rHo -17400; 'rSo •93.9.

*«***»*****»* SOIFOI * Aqueous » SOiriTES . * So lut ions » re » S5 * Database * September 1984 ************* EQUILIBBIOII REACTION: H S 0 3 - • OH- * S 0 3 — «• B20

7HEBH0CHEHICAL PROPERTIES:

~rHo, J nol-1 : - 65085 "So, J aol-1 K-1 : - 88.08 "Cpo, J nol-1 K-1 : - U4.91 &y"z2, (kg nol-1) 1/2 : 1-02 b, kg mo 1-1 : log Ko : 6.80

1/T 25 C

0.00 6.80

HEPERENCES: 1;2;5

COilBENTS:

EQ'JILIBBIUB EEACTION: H503- S03— • H*

SOLFUE SULFITES rc = S6 September 1984

THEHtfOCHEHICAL PR0PE8TIES:

" r H o , J « o l - 1 " S o , J m o l - 1 K-1 ~ C p o , J n o l - 1 K-1

A y ~ z 2 , (k<j m o l - 1 ) 1/2 b , k g no 1—1 l o g Ko

- 9280 -168-70 - 258.20

- 7.19

EQOILIBBIUH QUOTIENTS: I = i o n i c s t r e n g t h , « o l k g - 1

I / T 25 C 50 C 75 C

l o g Q

100 C 150 C 2 0 0 C 250 C 300 C

- 9 . 0 3 - 9 . 6 7 - 1 0 . 3 1 0 .00 - 7 .J9

0 . 0 1

7.35 7.57 - 7.83 8.40

BiiFEBENCES: 1 ; 2 ; 5

COHHENTS:

**»•**»*****• SOLFOB * Aqueous * SULFIDES * S o l u t i o n s * r e " S8 . * Database * Septeaber 1984

EQDH.IBBIDH REACTION: H2S (ag) + OB- * HS- • H20

THEKHOCHEHICAi. PROPERTIES;

" rHo, J «o l -1 : - 33705 "So, J « o l - 1 K-1 : 22 .42 "Cpo, J n o l - 1 K-1 : - 57 .21

Ay~z2,<kg no l -1 J 1/2 : 0 .00 fc, kg « o l - 1 s log Ko : 7 .07

EQUIUBBIUH QUOTIENTS: I=ionic strength, uol kg-1

log Q 1/T 25 C 0.00 7.07 0.01 0.10 0.20 0.50 1.00 2.00 3.00

50 C 6.61

75 C 6.19

100 C 5.82

150 C 5.17

200 C 4.62

250 C 4.14

300 C 3.72

REFERENCES: 1;2;4 COMMENTS;

* Aqueous * * So lu t ions * * D a t a b a s e »

BQUILIBRIDM REACTION: H2S(ag) = US- * H*

SULFOfi SULFIDES rc = S9 September 1964

T HER KOCH EMC AL PROPERTIES:

"rHo, J D O I - 1 : 22100 * S o , J mo l -1 K-1 : - 5 8 . 2 0 "Cpo, J B o l - 1 K-1 : - 2 7 0 . 5 0

Ay"z2,(kg nol-J) 1/2 : 1.02 b, kg m o l - 1 : l o g Ko : - 6 . 9 1

EQUILIBHIUH QUOTIENTS: I-ionic strength, lol kg-1

I/T 25 C

0.00 - 6.91

- 6.66

- 6.52

- 6.46

150 C 200 C

-6.5a - 6.78

- 7.51

EEFERENCES: 1;2;U

COflflENTS:

• Agueous * • S o l u t i o n s * • D a t a b a s e *

BOUILIBBIOH HEACTlOHs HS- • OH- « S— • H20

SOLTUB SBLF1DKS r c » s i o S a p t e i b e r 196*

THEBtOCHEMICAL PB0PEHTIE3:

* l H o , J « o l - 1 : - 5 1 0 5 " S o , J B O I - 1 K-1 : 3 . 2 2 ~Cpo, J B O I - 1 K-1 : - 9 5 . 1 1

A y - z 2 . (Kg n o l - 1 ) 1 /2 : 1 - 0 2 b . Kg 10.1-1 : l o g Ko : 1 . 0 6

SQUILIBHIOS QUOTIENTS: I = i o n i c s t r e n g t h , i o l k g - 1

l o g Q

I / T 25 C

0 .00 1.06

5 0 C 75 C

0 . 9 6 9 . 8 8

0 . 5 3

2 5 0 C

0 . 0 2

- 0 .23

flBFEBENCES: 1;2;i»

CCHMENTS:

* Aqueous * * Solutions * » Database *

EQUILIBRIUM BEACTION: HS-

SULFUR SULFIDES rc = S11 September 1984

S — * H»

THERHOCHEMICAL PBOPEBTIES: "rHo, J nol-1 : 50700 "So, J aol-1 K-1 : - 77.H0 "Cpo, J mol-1 K-1 : - 308.40 Ay*z2, (ky mol-1) 1/2 : 2.04 b, kg aol-1 : log Ko : -12.92

EQUILIBRIUM QUOTIENTS: l=ioaic strength, aol kg-1

log Q T/T 25 C 0.00 -S2.92 0.01 0.10 0.20 0.50 1.00 :>.oo 3.00

50 t -12.29

75 C -11.83

100 C -11.52

150 C •11.18

200 C -11- 12

250 C -11.23

300 C -11.46

SULFUR References June 1984

0.0. Wagman; U.H. Evans; V.B. Parker; R.H. Schumm; I. Halow; S.H. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Oata 1982, v. 11, Suppl No. 2. G.B. Naumov; B.N. Ryzhenko; I.L. Khodakovsky: "Handbook of Thermodynamic Oata"rTranslated by G.J. Soleimani, U.S. Geological Survey, Henlo Park, CA 94025 (January 1974). PB-226 722, NTIS. J.W. Larson; K.G. Zeeb; L. G. Hepler: Can. J. Chem. 1982, v. 60, 2141. J.A. Barbero; K.G. KcCurdy; P.R. Tremaine: Can. J. Chem. 1982, v. 60, 1872. J.A. Barbero; L.G. Hepler; K.G. McCurdy; P.R. Tremaine: Can. J. Chem. 1983, v. 61, 2509. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ed., John Wiley & Sons, Inc. New York (1980). W.L. Lindsay: Chemical Equilibria in Soils, John Wiley & Sons, Inc., New York (1979). M.H. Lietzke; R.W. Stoughton; T.F. Young: J. Phys. Chem. 1961, v. 65, 2247. B. Meyer; K. Ward; K. Koshlap; L. Peter: Inorg. Ciiem. 1983, v. 22, 2345. R.M. Smith; A.E. Martell: Critical Stability Constants. Vol. 4: Inorganic Complexes, Plenum Press, New York (1976). CODATA Task Group on Key Values for Thermodynamics: CODATA Recommendea Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978). K.S. Pitzer; R.N. Roy; L.F. Silvester: J. Am. Chem. Soc. 1977, v. 99, 4930. C. Dobrogowska; L.G. Hepler: J. Solution Chem. 1983, v. 12, 153. T.F. Young; C.R. Singleterry; I.M. Klotz: J. Phys. Chem. 1978, v. 82, 671.

* * * * * * * * * * * * * UHANIUH * Aqueous * HIDBOXXDES * Solutions * re = U1 * Database * September 1984

EQUILIBRIUM REACTION: U02+* • H20 = 0O2OB* • H*

THBKHOCHEKICAL PPOPEBTIES: "rHo, J u o l - 1 : " 6 3 9 0 " S o , J » o l - 1 K-1 : 4 3 . 1 9 "Cpo, J s o l - 1 K-1 : - 1 6 . 2 9

A y " z 2 , ( k g a o l - 1 ) 1/2 : - 1.02 b , kg 104.-1 : 0.39 l o g Ko : - 5.87

SQHILIBBIUM QUOTIENTS: l = i o n i c ' S t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C 50 C 75 C

0 .00 - 5.H7 - 5 .24 - U.71

0 . 0 1 - 5 .96

0 .10 - 6 .08

0.20 - 6 . 11

0 .50 - 6 .10

1.00 - 5.9«

2 . 0 0 - 5 .69

3 .00 - 5 .35

100 C 150 C 200 C 250 C 300 C - 4.26 - 3.52 - 2.91 - 2.49 - 2.12

REFERENCES: 3;4;10;12;47 COMMENTS:

U B A W O H H I D 8 0 X I D S S r e = 02 S e p t e m b e r 1984

SyUILIBBIUN HEACTION: 2(J02** * 2H20 = (1102) 2 (OH) 2** * 2H*

THERMOCHEBICAI. PROPEBTIES;

~ r H o , .7 m o l - 1 : 1 2 1 6 0 " S o , J m o l - 1 K-1 ; 3 5 . 3 8 " C p o , .J m o l - 1 K-1 : - 2 0 2 . 5 8

A y ' z 2 , { k g a o l - 1 ) 1/2 : - 1.02 b, kg a o l - 1 : 0 .02 l o g Ko : - 5 . 5 a

EQOlLIbRlON QUOTIENTS: I - - i o n i c s t r e n g t h , mol k g - 1

l o g Q

I / T 25 C

0.00 - 5.5K

0 .01 - 5 .63

0. 10 - 5 .78

0.20 - 5 .85

0 .50 - 5 .95

1.00 - 6 .03

i . 0 0 - 6.10

i . JO - 6 . 1.3

50 C 75 C 100 C

- D.00 - 4 .60 - » .30

150 C 200 C

• 3 .94 - 3 .78

250 C 300 C

- 3 .76 - 3.83

KEt'iiBENCfiS: 3 ; < l ; 1 0 ; 1 2 ; 4 7

COHflEHTS:

URANIUM HYDROXIDES r c = 0 3 S e p t e m b e r 1981

EQUILIBRIUM REACTION: 31102** * 5H20 = (1102) 3(0(1) 5+ * 5H*

TUEBflOCIIEHICAl. PBOPEBTIES:

~ r H o , J m o l - 1 " S o , J « o l - 1 K-1 " C p o , J u o l - 1 K-1

A y ~ z 2 , (kg mo l -1 ) 1/2 b, kg a o l - 1 l o g Ko B9 = 1.S0

106950 5 2 . 7 5

- 384.45 - 3.07

0.01 -15.98

KyuiLIBBlUM QUOTIENTS: I=ionic strength, mol kg-1

I/T 25 C 50 C 75 C ioo c 150 C 200 C 250 C 300 C 0.00 -15.98 -14.59 -13.52 -12.68 -11.54 -10.90 -10.58 -10.48 0.01 -16.24

0.10 -16.59

0.20 -16.72

0.50 -16.91

1.00 -17.03

2.00 -17.14

J.00 -17. 19

KKFEBENCES: 3;4;10;12 ;47

COMMENTS;

************* * aqueous • * Solutions * * Database *

OUAHXUfl HICBOX1BES rc « an Septeabec 1984

HQOILIflfilOH fiEACTION: U***t * H20 = OOH+** *• H+

THERUOCHEilICAL PROPERTIES:

"rHo, J mol-1 " S o , J mo1-1 K-1 "Cpo, J i»o l -1 K-1

A y ~ z 2 , (kg u o l - 1 ) 1/2 b , kg mo 1-1 l o g Ko 39 = 1 .97

49030 152.09

- 81.29 - 3.07

0.03 - 0.65

EQUILIBRIUM gUOTIENTS: l=ionic strength, nol kg-1

1/T 25 t 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 - 0.65 0.01 0.54 0.98 1.66 2.14 2.49 2.74

0.01 - 0.91

0.10 - 1.25

0.20 - 1.37

0. 50 - 1.54

1.00 - 1.65

2.U0 - 1.74

3.00 - 1.77

BliFEBENCES: 3 ;* ; 1 0 ; 1 2 ; 47

COMMENTS:

* Agueous * HYDROXIDES * S o l u t i o n s * re = US * D a t a b a s e « S e p t e a b e c 198U

EtfOILIBHIUH liEACTION: 0X- + + • 2H20 = 0(OH)2+* • 2H*

THERHOCHEaiCAL PKOPKfiTIES:

"rHo , J mol -1 : 7 1 1 6 0 " S o , J mo l -1 K-1 : 2 0 5 . 1 8 "Cpo, J n o l - 1 K-1 : - 1 0 3 . 5 8

A y ~ z 2 , (kg m o l - 1 ) 1 / 2 : - 5 . 1 1 b , kg n o l - 1 : 1 . 9 6 l o g Ko : - 2 . 2 7

EOUILIBRIDM QUOTIENTS: I=ionic strength, nol kg-1

I/T 25 C

0.00 - 2.27

0.01 - 2.71

0.10 - 3.30

0.20 - 3.46

0.50 - 3.41

1.00 - 2.87

2.00 - 1.34

3.00 0.37

50 C 75 C 100 C 150 C 200 C

1..29 - 0.47 0.21 1.27 2.03

REFERENCES: J;4;10;12;47

COMMENTS:

************* OBAmon * A q u e o u s * HYDROXIDES » S o l u t i o n s * r c * 06 • D a t a b a s e * S e p t a * b e r 1984 •*•***•*••*•%

E Q U I L I B R I A HEACTION: 0 t » * + • 3H20 = 0(OH) 3 * • 3H*

THEfi«OCKEHICAL PBOPERTIES:

" t H o , J 4 0 1 - 1 : 9 4 7 9 0 " S o , J m o l - 1 K-1 : 2 2 3 . 2 7 " c p o , J u o l - 1 K-1 : - 1 0 3 . 8 7

A y " z 2 , (kg m o l - 1 ) 1/2 : - 6 . 1 3 b , kg n o l - l : 1 .81 l o g Ko : - 4 . 9 4

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , » o l k g - 1

I/T 25 C 50 C 7 0.00 - 4.94 - 3.68 -0.01 - 5.48

0.10 - 6.2J

0.20 - b.47

0.50 - 6.57

1..00 - 6.20

2.00 - 4.91

i.00 - 3.40

100 C 150 C 200 C 250 C 300 C

1.73 - 0.34 0.70 1.48 2.08

KEFEKENCES: 3 ; 4 ; 1 0 ; 1 2 ; 4 7

COHMEHTS:

* » * • » ? * * « * • * * OKAMIOH * Aqueous * HIDBOXIDES * Solutions * r e = 07 * D a t a b a s e * S e p t e m b e r 1984

EQUILIBRIUM BEiCTICS: 0>«-*+ «• 4H20 = 0 (OH) 4 ( aq ) «• 411*

THEBBOCKEMICRL V R C P E a i l E S :

" r H o , J m o l - 1 : 103620 - S o , J i no l -1 K-1 1 8 4 . 3 6 " C p o , J i o o l - l K-1

A y * z 2 , (ky m o l - 1 ) 1/2 - 6 . 1 3 b , ky BO 1-1 1 . 7 8 l o g Ko : - 8 . 5 2

E Q U I L I B R I U M O O O T I E N T S : l = i o n i c s t r e n g t h , mol k g - 1

l o g Q

1/T 25 c

0.00 - 8.52

0.01 - 9.06

0.10 - 9.81

0.20 -10.06

0.ri0 -10. 17

1.00 - 9.31

-!.00 - 8.55

J.00 - 7.0/

50 C 75 C 100 C

- 5.00

150 C 200 C

• 4.00 - 3.00

250 C 300 C

&EFEHENCES: J;4;10;12;47

COMMENTS:

*•»***••**•*« URANIUM * Agueous • UIDBOXIOES * Solutions * re * 00 * Database * Sapteiber 1984 ************* EQUILIBRIUM REACTION; U++++ • 5H20 = U(0H)5<- * 5H+

THEBHOCHEHICAI. PnoPEE'riESs

"rHo, J mo l -1 " S o , J mo l -1 K-1 "Cpo, J a o l - 1 K-1

Ay~z2, <kg niol-1) 1/2 b , kg mol -1 l o g Ko

115450 135.45

- 497.45 - 5 . 1 1 1.45

-13 .15

EQUILIBBIUH fclicxiENTS: I = i o n i c s t r e n g t h , noi kg-1

log 0.

I / T 2b C 50 C 75 C

0.00 - 1 3 . 1 5 - 1 1 . 6 7 - 1 0 . 5 4

0 .01 - 1 3 . 6 0

0 .10 - 1 4 . 2 3

0.20 - 1 4 . 4 4

0 .50 - 1 4 . 5 4

1.00 - 1 4 . 2 6

2 .00 - 1 3 . 2 4

3. JO - 1 2 . 0 4

100 C 150 C 200 C 250 C 300 C - 9.69 - 8.60 - 8.06 - 7.89 - 7.96

REFERENCES: 3;4;10;12;47 COMMENTS:

****••****••« OaAHIOH * Aqueous » FLOOHIDES * s o l u t i o n s * re = 010 * Database * Septe ibec 198«

EQUILIBRIUH REACTION: H02*+ * HF(ag) = no2P«- + H*

THEKMOCUEMICAL PROPEBIIES:

"rHo, J m o l - 1 : - 16<*18 "So, J mol-1 K-1 : - 16-88 "Cpo, J iuol-1 K-1 : 40 .70

Ay"z2, (kg mol-1) 1/2 : - 1.02 b, kg noi-1 : log Ko : 1.99

0 . 0 1

aiBBIUM QUOTIENTS: I= ion ic s t r e n g t h , mol kg-1

l o g Q

BEfEBENCES: J;4;1u;12;47 COHMENTS:

* Aqueous * » So lu t ions * * Database *

EQUILIBRIUM HEACTION: U02«-» + F- = 0O2F*

URAHTD!! FLUORIDES re • 09 September 1984

THEHMOCHEMICAL PROPERTIES:

*cHo, J mo l -1 "SO, J B o l - 1 K-1 "Cpo, J mo l -1 K-1

A y * z 2 , (kg mol -1 ) 1/2 fc, kg m o l - 1 l o g Ko B9 = 1 .57

- 2350 91.28 202.00

- 2 .05 0.17

SQUILIDBIIH QUOTIENTS: I= ion ic s t r e n g t h , aol kg-1

I/T 25 C 50 c 75 C 100 C 150 C 200 C 250 C 300 C

0.00 5.18 5.18 5.21 5.34 5.63 5.99 6.39 6.81 0.01 5.00

0.10 4.76

0. 20 a.67

0.50 4.5d

1.00 4.55

7.1)0 1.62

J.00 1.73

flEFSEENCBS: 3 ; H ; 1 0 ; 1 1 ; «7

COMMENTS:

•»*****•»•**» OBANIUM * Agueous * FLUORIDES * Solutions * re = (111 * Database * September 198* ************* EQUILIBRIUM REACTION: U02 + * • 2IIF (aq) = U02F2(ag) • 2H*

THERHOCHEMICAL PBOPERTIES:

" cHo , J raol-1 : - 31136 " S o , J m o l - 1 K-1 : - 57 .86 "Cpo , J moX-1 K-1 : - 185.60

Ay-z2,(J<y a o l - 1 ) 1/2 : - 1.02 b , kg no 1-1 : log Ko : 2 .43

EQUILIBSIUH QUOTIENTS: I = i o n i c s t r e n g t h , s o l kg-1

0., 50

25 C 50 C 75 C 100 C 150 C 200 C

2.43 1.98 1.54 1.11 0.29 - 0.48

250 C 300 C

- 1.19 - 1.87

BliHSaEN(.£S: J;i»; 10; 12;47

COMMENTS:

*«»#******•*» * Aqueous * * Solutions » * Database *

EQOILIDdlUH hEACHON: U02+* * 2F- = U02F2(ag)

URAKION FLOOBIDZS rc « U12 S»pt«»bec 1984

THERHOCHEHICAL tBOPERTIES:

"rHo, J u o l - 1 ; - 3 0 0 0 " S o , J n o l - 1 K-1 ; 1 5 8 . 4 6 - C p o , J n o l - 1 K-1 : 1 3 7 . 0 0

A y " z 2 , ( k g mol -1 ) 1 /2 : - 3 . 0 7 b , kg m o l - 1 : 0 . 3 4 l o g Ko : 8 . 8 0 B9 = 1-52

EQUlLlBfllOM QUOTIENTS: i = i o n i c s t r e n g t h , « o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 8.80 0.78 8.81 3.86 9.04 9.23 9.52 9.79

0.01 8.54

0.10 8.18

0.20 8.05

0.50 7.92

1.00 7.92

2.00 a. io

3.00 8.36

hEFEHENCES: J ; 4 ; 1 0 ; 1 2 ; 4 7

COfiHEMTi.:

************* * Aqueous • * Solutions « * Database * ************* EQUILIBHIUH REACTIONj U02** * 3F- = U02*3-

aaiNiuH FLUORIDES re = U13 Septeiber 1984

THK8MOCHEHICAI. PR0PE8TIES:

~ r H o , J m o l - 1 : - 2750 " S o , J m o l - 1 K-1 : 205.6M " C p o , J fflol-1 K-1 : 1 0 6 . 0 0

A y " z 2 , (Kg m o l - 1 ) 1/2 : - 3 . 0 7 b , kg m o l - 1 : 0 . 5 8 l o g Ko : 1 1 . 2 2 B9 = 1 .12

EO.UILIBBIUM Q U O T I E N T S : I = i o n i c s t r e n g t h , a o l k g - 1

I/r 25 c 0.00 11.22

0 . 0 1 10.95

0 .10 10 .5^

0 .20 10.42

0.50 10.29

1.00 10.35

2.00 10.69

3.00 11.1b

50 C 75 C

100 C 150 C 200 C

11.20 11.22 11.25 11.38 11.55

HEFEBENCES: 1 ; « ; 1 0 ; 1 2 ; U 7

COIMEHTS:

* A q u e o u s * * S o l u t i o n s * * D a t a b a s e *

EUUIUBBIOH BEACTION: 1102** * 4F- D02F1—

UBAHXOH FLVOUDES r c * 0 1 4 S e p t e m b e r 1984

THERBOCHEHICAL PBOFEBTIES:

" r l i o , J n o l - 1 : - 3 7 0 0 " S o , J m o l - 1 K-1 : 2 2 5 . 8 2 " C p o , J m o l - 1 K-1 : 4 2 7 . 0 0

A y - z 2 , ( k g n o l - 1 ( 1/2 : - 1 . 0 2 b , k'; a o l - 1 : 0 . 4 7 l o g Ko : 1 2 . 4 4 B9 = 3 . 6 5

EQDILIBHIUM J 0 0 T I E N T S : I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 12.44 12.46 12.60 12.83 13.47 14.25 15.11 16.00 0.01 12.37 0.10 12.34 0.20 12.36 0.50 12.47 1.00 12. b9 2.00 13. 15 3.00 13.61

INFERENCES: 3 ; 4 ; 1 0 ; 1 2 ; 4 7

COHMENTS:

* * * * • * * * * * « • * OBANIOM * Aqueous * PIOOBIDES * Solutions * re = 015 * Database * Septeabec 193*

EQUILIBBIUM HEACTION: D*»** • HF(aq) = OF*** + fl+

SHEBMOUIENICAL PBOPERTIES:

" r H o , J n o l - 1 : 5 4 7 2 " S o , J m o l - 1 K-1 : 127.02 "Cpo, J a io l -1 K-1 : - 4 5 . 3 0

A y ~ z 2 , ( k g m o l - l j 1/2 : - 3 .06 b, kg no 1-1 : l o g Ko : 5 .67

EQUILIBRIUM QUOTIENTS: I = i o u i c s t r e n g t h , » o l k g - 1

l o g Q

25 C 50 C

5 . 7 9

5.72 5 .67

IIEFEEENCI'S: 3 ;U ; 10; 12 ;47

COMMENTS:

****:•** *t**** * Agueous • * Solutions * * Database * ************* E001LIBEI0H REACTION: Ut*** • g~ = Ut***

U I A N I O H M . O O K I D B S r e » 0 2 8 N o v s a b e c 1984

THEBNOCHEHICAL PBOPEBTI£S:

" r H o , J B O I - 1 " S o , J n o l - 1 K-1 ~C[>o, J m o l - 1 K-1

A y ~ z 2 , (kg a o l - 1 ) 1/2 b, kg n o l - 1 l o g Ko B9 = 2.16

195110 2 3 5 . 2 0

100.70 - 4.08

0.08 8.86

EuUILIBfllUM QUOTIENTS: I=ioaic strength, lol kg-1

log Q I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 8.86 9. It 9.HI 9.67 10.16 10.61 13.03 11.12 0.01 8.53

0.10 8. 10

0.20 7.95

0.50 7.7b

1.00 7.65

2.00 7.59

J.00 7.61

REFERENCES; 4 7 .

COMMENTS: V a l u e s f o r O e b y e - U u c k e l e q u a t i o n a r e f r o n T u r n e r e t a l .

************* DRAHIUM * Aqueous * FLUOHIDES » Solutions * re = 016 » Database * Septeuber 1984 ************* EQHILIBBIOH KEACTION: U***+ * 2UP(aq) = UF2+ + * 2H+

THEEaOCHEMICAL PflOPfcflTIES:

"rHo, J mol-1 "So, J ooi-1 K-1 ~Cpo, J mol-1 K-1

A y - z 2 r (kg m o l - 1 ) 1/2 b , kg m o l - 1 l o g Xo

464 161.04

- 34.60

log Q I/T 25 C 0.00 U.33 0.01 0.10 0.20 0.50 1.00 2.00 3.0 0

50 C 8.33

75 C 8.32

100 C 8.30

150 C 8.25

200 C 8.19

250 C 8.13

300 C 8.05

fiSFERENCES' 3 ; 4 ; 1 0 ; 1 2 ; 4 7

COPIMENTS:

* Aqueous * * So Lilt ious • * Database *

EQUILIBfilUB REACTION: U+*t<- + 2F- = UF2»*

DRAKIUH 2L0OBIDES rc - 029 October 1984

THERNOCHEMICAL PROPERTIES: ~rHo, J mol-1 : 28600 "So, J »ol-1 K-1 : 377.40 "cpo, J mol-1 K-1 : 288.00 Ay_z2,(kg mol-1) 1/2 : - 7.14 b, kg mol-1 : 0.55 log Ko : 14.70 B9 = 2.07

EQUXLIBHIUfl QUOTIENTS: I=ionic strength, mol kg-1

log Q I/T 25 C 0.00 14.70 0.01 0.10 0.20 0.50 1.00 2. JO

50 C 15. 13

75 C 15.59

100 C 16.06

150 C 17.00

200 C 17.93

250 C 18.84

300 C 19.72

KEFKHENCKS: 47 COMMENTS:

«****•••***•• 081 HI U11 * Aqueous * FLOOHIDES * solutions » rc * 017 * Database • Septeiber 1964

EQUItlBSIOH REACTION: a**** • 3HF(ag) = BF3* • 3H»

THERnOCHERICAL PROPEBIIES: ~cHo, J nol-1 : - 1225« "So, J nol-1 K-1 : 142.06 ~Cpo, J iaol-1 K-1 : 8. 10 Ay~z2,(kg aol-1| 1/2 j - 6-12 b. leg »ol-1 : log Ko : 9.57

EQUILIBRIUM QUOTIENTS: I=ionic strength, »ol kg-1

log j I/T 25 C 0.00 9.57 0.01 0.10 0.20 0.50 1.00 2.00 J. 00

50 C 9.40

75 C 9.26

100 C 9.14

150 c 8.95

200 C 8.81

250 C 8.69

300 C 8.61

BEFEHENCES: 3;4;10;12;47 COMMENTS:

EUdltlBfilUM REACTION: U»**+ + 3 F - = OF*

UIAMIOH rLDoaxois rc * 030 October 1984

THEBHOCHEMICAL PBOPERTIES: " r H o , J B O 1 - 1 "So, J mo l -1 K-1 "Cpo , J n o l - 1 K-1 Ay~z2, (kg mol-1) 1/2 b, kg mol-1 log Ko RS = 0.89

29950 466.54 492.00

-9.19 1.16 19.12

aulLIBHIOB QOOl'IENTS: I=ionic strength, sol kg-1

log Q I/T 25 C 0.00 19.12 0.01 0. 10 0.20 0.50 1.00 2.00 j.00

50 C 19.61

75 C 20.17

100 C 20-77

150 C 22.08

200 C 23.42

250 C 24.77

300 C 26.10

hEFERENCES: "»7 COMMENTS:

* * • * • « * * • * • • * OKAHIUfl * Aqueous • r iUOBIDES * S o l u t i o n s * r e = 018 * D a t a b a s e * S e p t e m b e r 1984

EQDILIBBIOH hiSACTIOd: « • • • • » «HF(aq) = UF1<aq) • «H>

THEBMOCBEH.ICAL tCOPEBTIES:

~cHo, J m o l - 1 : - 38572 " S o , J « o l - 1 K-1 : 8« .08 "Cpo , J u o l - 1 K-1 : - 8 .20

Ay *z2 , (kg n o l - 1 ) 1/2 : - 6 .12 b , kg mo i -1 : l o g Ko : 11-15

EQUILIBRIUM QUOTIISNI'S: I = i o n i . c s t r e n g t h , « o l k g - 1

log Q 1/1 25 c

0.00 11.15

-2.00 J.00

REFERENCES: 3 ; 4 ; 10 ; 1 2 ; 4 7

COMMENTS:

************* * Aqueous * * Solutions * * Database * ************* EQUILIBRIUM REACTION: ]}+*** * « F - = tJF«(ag)

08AMDH FLUORIDES r c « U31 O c t o b e r I9flu

THERMOCHEMICAL PROPERTIES:

" t H o , J mo l -1 : 17700 " S o . J a o l - 1 K-1 : 5 1 6 . 7 2 *Cpo r J mpl-1 K-1 : 6 3 7 . 0 0

A y " z 2 , ( k g u o l - 1 ) 1 /2 ; - 1 0 . 2 0 fc, kg s o 1-1 : l o g Ko : 2 3 . 8 9

I 0 9 Q

1/1 25 C

0.00 23 .89

0 . 5 0

J . 30

2<f.71

2 5 . 2 9

2 6 . 6 2

29 .62

31 .15

iiEFESENCES: 4 7 .

COMMENTS:

BQUILIBHIUM HEACTIQN; U**t* * 5 F - = UF5-

OBANiad K.0OBIDKS TC = 019 S e p t e m b e r 1980

THEBMOCHfiMICAi. PROPEHTIBS:

" r H o , J n o l - 1 : 18350 " S o , J fliol-1 K-1 : 5 5 0 . 9 0 * C p o , 0 fflol-1 K-1 : 5 3 3 . 0 0

A f " z 2 , ( k j m o l - l j 1/2 : - 1 0 . 2 0 b, k g n o l - 1 : l o g Ko : 2 5 . 5 6

EOUXLIBfllUrt QUOTIENTS: I = i o n i c s t r e n g t h , mol k g - 1

l o g Q

1/1 25 C

0 . 0 0 2 5 . 5 6

0 . 5 0

2 . 0 0

3 . 0 0

2 5 . 8 9

26 .34

2 6 . 9 6

28 .03

2 9 . 3 1

3 0 . 6 2

3 1 . 9 4

DEFERENCES: J ; k ; 1 O; 12 ;H7

COMMENTS:

* A q u e o u s * * s o l u t i o n s * * D a t a b a s e *

EQUILIBRIUM BEACTION: U**** + 6 * - * UF6-

08 A l l Oil FLUORIDES r c • 020 S e p t e m b e r 1 9 8 4

THEBHOCHEMICAL PfiOPERTlES;

* r i i o , J n o l - 1 : 13800 " S o , J m o l - 1 K-1 : 5 7 7 . 0 8 " C p o , J a o l - 1 K-1 : 7 9 4 . 0 0

A y * z 2 , (kg m o l - 1 ) 1/2 : - 9 . 1 8 b , leg u o l - 1 : l o g Ko : 2 7 . 7 2

EQUlLIUBlUh Q U O T I E N T S : I = i o n i c s t r e n g t h , mol fcg-1

l o g Q

I./T 25 C

0 . 0 0 2 7 . 7 2

28.011

2 8 . 54

29 .18

3 0 . 7 1

32 .43

34 .24

3 6 . 0 9

REFERENCES: 3 j 4 : 1 0 ; 1 2 ; 4 7

COMMENTS:

(. * Aqueous * * So lu t ions * * D a t a b a s e *

EUOIUBBIUH BEACTION: 3 0 2 * * • C I - = D02C1?

OHAHIOM CHL0B1DES re = D26 September 1984

THEBMOCHEtUCAL PROPERTIES:

"cHo, J n o l - 1 " s o , J m o l - 1 K-1 " C p o , J mo l -1 K-1 Ay*z2, (kg aol-1) 1/2 b, kg moi-1 log Ko B9 = 6.25

180 34.37 548.00

- 2.05 0.01 1.76

l o g Q

I/I 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 1.76 l.bb 2.09 2.44 3.34 4.41 5.56 6.75

0.01 1.63

0.10 1.5U

0.. 3 1.52

0.50 1.50

I.'IU m y P.JO 1.19

3.00 1.49

REPRSENCES: -); ̂ ; 1 0 ; \2 \ 47

COMMENTS:

* Aqueous * * S o l u t i o n s * * Database *

OBXKIOH CHLORIDES r c « U27 S e p t e m b e r 1984

EQUILIBRIUM REACTION: D***+ • C I - = U"C1»«-*

THERROCUEiUCAL PROPERTIES:

"rHo, J m o l - 1 " S o , J iuoL-1 K-1 * C p o , J m o l - 1 K-1

A y " z 2 , (kg m o l - 1 ) 1/2 b , kg n o l - 1 l o q Ko B9 = 2 .16

7 2 8 0 7 4 . 2 7 4 5 9 . 0 0

- 4 . 0 9 0 . 0 b

2 . 6 0

EQUILIBRIUM QUOTIENTS: I = i o n i c s t t e n g t h , » o l k g - 1

l o g Q

1/1 25 C 50 t 75 C 100 C 150 C 200 C 250 C

6 . 3 2

7-38 o.uo 2.dO

0 . 0 1 2 .26

0 .10 i.an 0. 20 1.69

0.50 1.50

1.00 1.39

2 .00 1.33

3.00 1 . 35

2 .78 3.06 3.42 4.29 5 .28

UEFEUDNLKS: 3 ; 4 ; ' 0 ; 1 2 ; U 7

COMMENTS:

• * » • * * * * * • * • • * Aqueous * * s o l u t i o n s • * D a t a b a s e * *************

DfiAHIUH SULFATES CC = 033 O c t o b e r 1984

EQUILIBRIUM REACTION: U02 + + • 5 0 4 — = U02SO4(aq)

THEBMOCHEMICAL PROPEHTIES:

" r H o , J n>ol-1 : 2 2 0 0 0 " S o , J n o l - 1 K-1 ; 1 3 0 - 3 0 * C p o , J « io l -1 K-1 : 6 2 7 . 0 0

A y * 2 2 , ( k g m o l - 1 ) 1 / 2 : - 4 . 0 8 b, kq » o i - 1 : - 0 . 0 1 l o g Ko : 2 . 9 4 B9 = 2 . 6 3

LVUILI3BIUH QUOTIENTS.: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I/T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0.00 2.94 3.35 3.88 4.49 5.88 7.39 8.94 10.49 0.01 2. b2

0.10 2.23

0. 20 2.09

U.50 1.93

1.00 1.81

2.00 1.69

3.00 1.b4

REFERENCE.';: 4 7 .

COMMENTS:

* * • * « • * * • * • • • OBAMIOfl * Aqueous * SULFITES * So lu t ions * ro * OiH * Database « October 198tt »•»*«**•••»** EQUIUBBIOB REACTION: U ++++ • 2S04— = U<S04) 2 (aq)

THEBHOCHEH1CAL PROPERTIES: THo, J nol-1 : 31800 "So, J uol-1 K-1 : 266.30 "Cpo, J nol-1 K-1 : 619-00 Ay*z2,<kg mol-IJI/2 : -12.24 b, kg mol-1 ; log Ko : S.iH

EQUILIBRIUM QUOTIENTS: i=iouic strength, «ol kg-1

BEFEBENL'ES: 47.

COMMENTS:

* Aqueous * * Solutions * * Database »

OBklflOM CiBBOHJkTKS r c = 021 S e p t e a b e r 196a

EwillLIBBIOfi REACTION: 3 0 2 * * • H2C03 (aq) = 0 0 2 C 0 3 ( a g ) • 2H*

THERHOCHEfllCfU. PBOPEBTIES:

" r H o , J m o l - 1 : 10850 * S o , J a o l - 1 K- l : - 9 0 . 3 0 " C p o , J u i o l -1 K-1 : 1 / 3 . 0 0

A y ~ z 2 , (kg m o l - 1 ) 1/2 : - 1 .02 ii, k g BO 1-1 : l o g Ko i - e . 6 2

EQOILIBRIUfI QUOTIENTS: I = i o n i c s t r e n g t h , » o l k g - 1

I / T 25 C 50 C 75 C

6 . 6 2 6.«<i

log Q 100 C 150 C 200 C 250 C 300 C

6.02 - 5.56 - 5.08 - a.61 - 4. 1i»

REFERENCES: J;4 ; 1 0 ; 1 2 ; 17

COMMENTS:

OR AM11M CA*BO.<ATES r e * B22 S e p t e m b e r ?98<s

EQUILIBRIUM] REACTION: 002+* • C 0 3 — = U02CG3(aq)

THEEROCHEMICAL PROPERTIES:

" r H o , J a o l - 1 " S o , J n o l - 1 K-1 " C p o , J B O I - 1 K-1

A y " z 2 , (Kg m o l - 1 ) 1 / 2 b , kg u o l - 1 l o g Ko B9 = 1 .6 3

- 11660 1 5 U . 0 0

7 9 3 - 0 0 - 4 . 0 9

0 . 0 5 1 0 . 0 9

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , mol kg -1

I / T 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C

0 .00 10.09 10.06 10.27 10 .64 11.75 13.14 14 .68 16.30

0 .01 9 .74

0 .10 9.24

0 .20 9.04

0.50 8 .77

1.00 8 .58

2.0U b.44

3.00 8. 39

REFERENCES: 3 ; 4 ; 1 0 ; 1 2 ; 4 7

COMMENTS:

************* * Aqueous » * Solutions * * Database •

DBAHind CABBONATES rc = D23 September 1934

EQUILIBfilOM BEACTION: U02»* » 2H2C03(ag) = 0O2{CO3)2— • UH*

THEBBOCHEBICAL PBOPEaTIES: "rHo, J mol-1 "SO, J HOl-1 K-l "Cpo, J iao l -1 K-1

A y _ z 2 , (fcg mol-1) 1/2 b , kg mo 1-1 l o g Ko

5960 0 - 1 1 1 . 7 0 - 1 0 2 8 . 0 0

2 . 0 1

- 1 6 . 2 7

EQUILIBRIUM QUOTIENTS: I = i o n l c s t r e n g t h , a o l k g - 1

I / I 25 C

0 .00 - 1 6 . 2 7

50 C 75 C

100 C 150 C 200 C 250 C 300 C

- 1 5 . 6<* -15 .39 - 1 5 . 4 3 •16.13 - 1 7 . 3 5 - 1 8 . H 8 - 2 0 . 5 9

HEPEBFNCES: 3;U;10;12;47

COMMENTS:

* Agueous * C»BBO»»TES * Solutions * re * 024 * Database * September 1981 *************

EQUIIIBBIUU BEACTIONs 0 0 2 * * • 2 C 0 3 — = D 0 2 ( C 0 3 ) 2 —

THEBMOCHEMICAT. PBOPEBTIES:

*r f lo , J mol -1 : 1 « 5 8 0 " S o , J m o l - 1 K-1 : 3 7 6 . 9 0 ~Cpo, J a o l - 1 K-1 : 2 1 2 . 0 0

A y " z 2 , ( k g m o l - 1 ) 1/2 : - 1 . 0 9 b , kg m o l - 1 : - 0 . 2 2 l o g Ko : 1 7 . 1 3 B9 = 1 .61

EQUILIBRIUM QUOTIENTS: I = i o n i c s t r e n g t h , a o l lcg-1

1 / 1 25 C 50 C 75 C 100 C 150 C 200 C 250 C 300 C 0.00 17.13 17.36 17.62 17.90 18.49 19.09 19.69 20.28 0.01 16.78 0.10 16.25 0.20 16.02 0.50 15.67 1.00 15.3« 2.00 14.92 3.00 1«.60

BEFERENCE3: 3 ; 4 ; 10 ; 12 ; "«7

COflHENl'S:

•*«*****•«••* uttimnw * Aqueous * CWBOMATES * S o l u t i o n s * EC = 025 * Database * September 1984

EQUILIBfilUH EEACTION: 002** • 3C03— = [102 (C03) 3

THERHOCHESICAL PBOPERTIE3:

"rflo, J nol-1 : - 35880 "So, J aol -1 K-1 : 27'^BO "Cpo, J mo 1-1 K-1 : 1195-00

Hy"z2,(kg mol-1) 1/2 : 0.00 b, kg n o l - 1 : - 1 . 1 7 log Ko : 20.64

EQUILIBRIUM QUOTIENTS: I= ion ic s t r e n g t h , BOI Jtg-1

I/T 25 C 50 C 75 C 100 C 150 C 300 C 250 C 300 C

0.00 20.6* 20.35 20.15 20.84 22.20 24.05 26.19 23.47

0.U1 20.63

0.10 20.52

0.20 20. 4i

0.50 20.06

1.00 19.47

2.00 18.30

3.00 17. 13

BEFEHENCES: 3 ; 1 ; 1 0 ; 1 2 j 4 7

COflBENIS:

************* * Aqueous » * Solutions * * Database *

UBIKIOH C42BOIATEE cc - 032 •< October 19UU

EQUILIBRIUM HEAC'l'IOH: 2U02»» • C02(aq) • l»H20 = (U02) 2 (COS) (OR) 3- • 5H*

THERBOCHEMICAL PROPERTIES: "rHo, J mol -1 " S o , J m o l - 1 K-1 "Cpo, J raol-1 K-1

A y * z 2 , (kg m o l - 1 ) 1 /2 b , kg m o l - 1 l o g Ko

E C U I L I B B I U H Q U O T I E N T S : l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

1/1 25 C

0 . 0 0

0 . 0 1

0 . 10 - 1 8 . 6 3

50 C 75 C 100 C 150 C 200 C 2 5 0 C 300 C

HEFEBENCKS; 1 1 .

COflMEMTS:

* * * * * * * * * * * * * DfiUIIOB * Aqueous * OXIDES * Solutions * cc = U15 * Database * Hoveabec 193a ************* EQUILIBRIUM REACTION: gaaaa-U03(s) + 2H* = U02+* • H20

THEHMOCH.EKICAL PROPEBTIES:

" r H o , J mo l -1 " S o . J a o l - 1 K-1 *Cpo , J BO 1-1 K-1

Ay~z2, (kg mo l -1 ) 1/2 b, kg no 1-1 l o g Ko

- 81030 - 1 2 3 . 3 0

7 . 0 6

EguiLlBBIUll QUOTIENTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

0 . 0 1

j . 00

fa. 75

2 . 5 6

0 . 9 9

HU'fclKENCKJ: i».

LOHHEHTS:

* * » » * * * * • « * * * UBANIUH * A g u e o u s * OXIDES * S o l u t i o n s * r e » 1146 * D a t a b a s e • l o y e a b e r 1984

EUUILIBBIUM BEACTIOM: 0O3 .2H2O(s ) • 2H* = 0O2<-+ • 3H20

THERMOCHESICAL PBOPEBTIES:

* r H o , J B o l - 1 : - 4 9 8 9 0 " S o , J B o l - 1 K-1 : - 6 3 . 3 7 " C p o , J BOl-1 K-1 : 3 0 . 6 7

A y - z 2 , (kg B O 1 - 1 ) \/2 b , k g m o l - 1 l o g Ko ; 5 . 4 3

EUUILIBBIUfl QUOTIENTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

0 . 0 0

0 . 0 1

4 . 7 6

4 . 1 9

3 . 7 1

HEFEflENCES: 4 .

CONSENTS:

i ************* * tgueous * * Solutions * * Database *

DBkHIUH OXIDES rc = U44 November 1984

EuOItiBBIUM BEACTIGN: 2002 (s) * 4H* * 02(g) = 2UQ2** * 2H20

THEEMOCHEHICAL PKOtERTIES: "rUo, J uol-1 : -447060 "So, J aol-1 K-l : -413.48 ~Cpo, J mol-1 K-1 : 4.02

Ay~z2, (kg mol-lj 1/2 b, kg » o l - 1 l i g Ko : 56 .72

EQUILIBRIUN QUOTIENTS: I = i o n i c r txength , «ol kg-1

1/1 25 C

0.00 56.72

40 .98

150 C 200 C

33.59 27 .77

REFERENCES: n.

COM1ENTS:

* Aqueous * » S o l u t i o n s * * D a t a b a s e *

BB4NIUH OXIDES TO = 0 3 5 H o v e i b e r 1984

EQUILIBEIUfl UL'ACTION: 4 U 0 2 ( s ) » CIH+ + 0 2 ( g ) = 4 0 0 2 * * 2H20

THEBMOCHEMICAL PBOPERTIES:

" r f l o , J m o l - 1 " S o , J Diol-1 K-1 " C p o , J n o l - 1 K-1

A y " z 2 , (kg m o l - 1 ) 1/2 b , k g m o l - 1 l o g Ko

- 362460 - 4 7 3 . 3 «

306 .01

EQUILIBBI'JM QUOTllSNTS: l = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

1/1 25 C

0 .00 38.77

50 C 7'i C 100 C 150 C 200 C 250 C 300 C

33.32 29 .88 26 .4a 2 1 . 1 2 17.14 14.13 11 .81

nt'FKfiENCKS: 3 ; 4 ; 9 ; 1 2 .

COflHEBTS:

* • * * * * * * • * * • * OBANIUN * Agueous * OXIDES * S o l u t i o n s * r e - 042 * D a t a b a s e • November 1984 * » * * » * * • » » » * »

EQUILIBHIUH REACTION: U02(S) • 4H«- = B+»»» • 2H20

THERMOCHEHICAL I'BOPKHTIES:

" r H o , J « o l - 1 " S o , J B O I - 1 K-1 " C p o , J u o l - 1 K-1

Ay~£2 , (kg mo l -1 ) 1/2 b , kg « o l - 1 l o g Ko

- 77960 - 3 5 1 . 2 1

38 .90

EQUILIBRIUM QUOTIENTS: l=ionic streogtb, iol kg-1

I / T 25 C 50 C 75 C

0.00 - 4 .69 - 5 .74 - 6 .62

0 . 10

100 C 150 C 200 C 250 C 300 C

- 7.38 - 8.61 - 9.55 -10.29 -10.89

REFERENCES; 4.

COMMENTS:

* IguaooE * * Solutions * * Database *

DIAVIOa 01 IMS re • 038 •oveabar 1984

BQaiUBRIOfl BBaCIIOII: 4002 (S) • 12B* » 40**» * 6H20 • 02(g)

THEBHOCHEKXCAL PBOFfiBTIES:

" rHo, J BOl-i "So, J a o l - 1 K-1 " C p o , J B O l - 1 K-l

ky"z2. (kg aol-1) 1/2 b, kg aol-1 log Ko

2S9820 34.71

BQ0ILIBBID9 QUOTIENTS: I-ionic streagth, aol kg-1

log Q I/T 25 C 0.00 0.01 0.10 0.20 0.50 1.00 2.00 J. U0

50 C 75 C 100 C 150 C 200 C -98.48

250 C 300 C -95.67 -93.33

BBFEBEHC<iS: 4. COflflENTS; "So = -1339.62. log Ko = -115.48(250; -111.95(500);

-108.93(75C) ; -106.29(100C); -101.94 (150C) .

* Aqueous * * Solutions • * Database *

(JHAMIUH OXIDES re » a»i Hoveabec 1984

EQUILIBBIUH RBACTIUN: 20308 (s) » 12H* * 02(g) = 6U02«* • 6H20

THEBHOCHEBICAL PEOPERTIES: ~rHo, J nol-1 "So, J ool-l K-1 "Cpo, J uol-1 K-1 Ay*z2, (kg uol-1) 1/2 b, kg mo 1-1 log Ko

-682980 -933.36 1378.82

EQUllIBriu.l QUoTlEN'i'S: I= ion ic s t r e n g t h , s o l kg-1

I/T 25 C

0.00 70.89

61 .87

48 .53

33 .27

REFERENCES: 1.

COM.IEHTS:

* agueous * » Solutions • * Database •

O l i l i o a OXISXS r e • 043 •oraabar 1984

EQ0ILIBBI0S BEICTIOB: 2D409(S) «• 16d+ 4- 3 0 2 ( g ) > U0O2»» • 8H20

TBEBHOCHEIIICtL PBOPEfiTIES:

"rHo, J a o l - 1 " S o . J « o l - 1 K-1 " C p o , J a o l - l K-1 : - 849 .23

a y " z 2 , (kg a o l - 1 ) t / 2 b, kg a o l - 1 l o g Ko

EQOILIBBIOH QOOXIERTS: I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

I / T 25 C

2 . 0 0

50 C 75 C 100 C 150 C

94 .78

7 0 . 5 7

2 5 0 C

5 7 . 7 8

43 .54

BEFEBEBCES: 4 .

COHHBHTS: " rHo= - 1 4 2 2 6 4 0 ; - S o = - 1 5 0 0 . 9 ; l o g Ko = 170. 83 (25C) ; 151 .40150C) ; 1 3 4 . 5 3 ( 7 5 C ) ; 119. 69 (100C) .

* A j u e o u s • » S o l u t i o n s » * D a t a b a s e *

ORAHHTH HT0H0XIDE3 c c » 047 O c t o b e r 1984

EQUILIBRIUM I!EACTION: b e t a - U 0 2 (OH) 2 (S) * 2H* = U02** *• 2B20

THERMOCHEMIC.U. PBOPEBTIES:

" c H o , J n o l - 1 : - 5 6 5 6 0 " S o , J m o l - 1 K-1 : - 9 9 . 0 8 " C p o , J m o l - 1 K-1 : 6 9 . 7 9

Ay"z2, (kq ao l -1 ) 1/2 b, kg mo 1-1 l o g Ko : 4 . 7 J

EOUILIBKIUM QUOTIENTS; I = i o n i c s t r e n g t h , a o l k g - 1

l o g Q

i / T 25 C

0 .00 4 .73

0..5 0

2 . 0 0

2 5 0 C

0 . 9 5

0 . 6 1

REFERENCES: 'I

COHHENTS:

************* * Agueous * * Solutions * * Database * ***••*•**••** EQUILIBRIUM REACTION: UF4(S) 0*f*t * Hf-

uRANina rtnoBXDEs re = 039 UoTeabec 1984

THERflOCHEHICAL PHOPEHTIES:

"rHo, 0 mol -1 " S o , J m o l - 1 K-1 "Cpo, J mo 1-1 K-1

A y ~ z 2 , <kg m o l - 1 ) 1 /2 b, kg mo 1—1 l o g Ko

- 18400 -618.39 - 652.02

-29 .07

EQUILIBB1UH QUOTIENTS: I= ion ic s t r e n g t h , nol kg-1

75 L 100 C 150 C 200 C 250 C 300 C -29.23 -J0.52 -31.89 -33.39 -34.96 -36.54

r /T 25 C 53 C

0.00 - 2 9 . 0 7 - ? 9 . 4 3

2. 0 0

J . 00

3EFERENC1SS: 4.

COMME'.'IS:

* « * * * • * * * * • • • OBANIUH * Aqueous • FLUOBJDES * S o l u t i o n s * r c » 037 * Database • Jaouar/ 1985

EQUILIBBIUI1 REACTION: 2BFU.2.5H20 = 2U***+ * 8F- • 5H20

• Uh.-n ".LiilCAL PBOPEBTIBS:

"Clio, J n o l - 1 : - 31863 "So, J fliol-1 K-1 "Cpo, J n o l - 1 K-1 : - 1 9 5 5 . 0 0

Ay"z2, (kg » o l - 1 ) 1/2 b, Jcg »ol~1 log Ko : - 5 5 . 1 0

EQUILIBRIUM QUOTIENTS: l = i o n i c s t r e n g t h , «ol kg-1

log Q I/T 25 C 0.00 -55.10 0.01 0. 10 0.20 0.50 1.00 2-00 j.OO

50 C -55.86

75 C 100 C -57.07 -58.61

150 C 200 C 250 C 300 C -62.31* -66.56 -71.01 -75.53

BEFEBENCES: tt COMMENTS: "So = -1161.89 J mol-1 K-1 foe this cection. Formula for

UFH.2.5H20 corrected; was OF. 2.5H20.

* * » * * * * * * • » * » URAHIDH * Aqueous * CABBOMATKS * Solutions * ro = 036 * Database * NoTeaber 1984

BQOILIBBIDB REACTIOM: 0O2CO3<s) = 002+* • C 0 3 —

THEBMOCHEHICAL PROPERTIES:

"rHo, J aol-1 -So, J aol-1 K-1 ~Cpo, J aoI-1 K-1 Ay"z2, (kg mol-1) 1/2 t, kg BO 1-1 log Ko

- 55<I0 -292.10 - 022.50

•1U.29

l o g Q

I / T 25 C

0 . 0 0 - 1 4 . 2 9

0 . 0 1

0 . ' .

0 . 20

3.. 00

50 L 75 C 100 C 150 C 200 C 250 C 300 C

-1'4 .43 - 1 U . 6 8 - 1 « . 9 9 - 1 5 . 7 8 - 1 6 . 6 7 - 1 7 . 6 2 - 1 8 . 5 9

iMifEKENCES: M

COtiaEKTS:

OBAHIUM SILICATES CC * 040 Noveabec 1984

EQUILIBRIUM REACTION: OSiOtt (s) • 4H* = 0* + * + + Si (OH) 4 (aq)

THERMOCiiENICAI. PROPERTIES: "rHo, J nol-1 : - 51300 "So, J aol-1 K-1 ; -351.00 -Cpo, J mol-1 K-1 : 17.00 Ay~z2, (kg mol-1)1/2 b, kg »ol-1 log Ko : - SI. 35

EQUiLIBKlun QUOTIENTS: l=ionic strength, lol kg-1

log 8 I/T 25 C 0.00 - 9.35 0.01 u. 10 0.20 0.50 1.00 2.00 3. 00

50 C -10.0t

75 C -10.63

100 C -11.13

150 C -11.95

200 C -12.59

250 C -13.0<»

300 C -13.50

8EFEHENCES: 12. COMMENTS:

URANIUM References April 1984

E. Koglin; N.J. Schenk; K. Schwochau: Appl. Spectroscopy 1978, v. 32, 486. E.H.P. Cordfunke; U. Ouweltjes; P. vanVlaanderen: J. Chem. Thermodynamics 1983, v. 15, 237. J. Fuger; F.L. Oetting: "The Chemical Thermodynamics of Actinide Elements and Compounds. Part 2. The Actinide Aqueous Ions". International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (July 1976). R.J. Lemire; P.R. Tremaine: J. Chem. Eng. Data 1980, v. 25, 361. E.H.P. Cordfunke; W. Ouweltjes; S. Prins: 0. Chem. Thermodynamic 1982, v. 14, 495. E.H.P. Cordfunke; R.P. Muis; W. Ouweltjes; H.E. Flotow; P.A.G. O'Hare: J. Chem. Thermodynamics 1982, v. 14, 313. D.M.H. Kern; E.F. Orlemann: J. Am. Chem. Soc. 1949, v. 71, 2102. H.E. Barner; R.V. Scheuerman: Handbook of Thermochemical Data for Compounds and Aqueous Species, John Wiley & Sons, Inc., New York (1978). G.B. Naumov; B.N. Ryzhenko; I.L. Khoaakovsky: "Handbook of Therrnoaynamic Oata",Translateo by G.J. Soleimani, U.S. Geological Survey, Menlo Park, CA 94025 (Jaunuary 1974). PB-226 722, NTIS. O.D. Wagman; W.H. Evans; V.B. Parker; R.H. Schuimi; I. Halow; S.H. Bailey; K.L. Churney; R.L. Nuttall: The NBS Tables of Chemical Thermodynamic Properties, J. Phys. Chem. Ref. Data 1982, v. 11, Suppl No. 2. F.A. Cotton; G. Wilkinson: Advanced Inorganic Chemistry, Fourth ed., John Wiley £ Sons, Inc., New Vork (1980). D. Langmuir: Geochim. Cosmochim. Acta 1978, V. 42, 547. G.K. Johnson; W.V. Steele: J. Chem. Thermodynamics 1981, v. 13, 717. J. Fuger: "Thermodynamic Properties of the Actinides: Current Perspectives"; in, Actinides in Perspective, N.M. Eaelstein (ed.), Pergamon Press, New York (1982), p. 409. L.R. Morss: "Complex Oxiae Systems of the Actinides"; in, Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982), p. 361. S.L. Phillips; D.to.H. Kern: Anal. Chim. Acta 1959, v. 20, 295. W. Gordy; to.J.O. Thomas: J. Chem. Phys. 1956, v. 24, 439.

1 D CODATA Task Group on Key Values for Thermodynamics: CODATA Recomnended Key Values for Thermodynamics 1977, CODATA Bulletin 28, CODATA Secretariat, 51 Boulevard de Montmorency, 75016 Paris, France (April 1978).

19. M.S. Caceci; G.R. Choppin: Radiochim. Acta 1983, v. 33, 207. 20. R.A. Robie; B.S. Hemingway; O.R. Fisher: "Thermodynamic Properties of

Minerals end Related Substances at 298.15K and 1 Bar (100,000 Pascals) Pressure and at Higher Temperatures", Geological Survey Bulletin 1452, U.S. Government Printing Office, Washington, OC 20402 (1978).

21. D.S. Kaganyuk; V.I. Kyskin; I.V. Kazin: Radiokhimiya 1983, v. 25, 67. 22. L.R. Morss; C.W. Williams; I.K. Choi; R. Gens; J. Fuger: J. Chem.

Thermodynamics 1983, v. 15, 1093. 23. P.R. Tremaine; J.D. Chen; G.J. Wallace; W.A. Boivin: J. Solution Cnem.

1981, v. 10, 221. 24. A.I. Moskvin: Radiokhmiya 1973, v. 15, 504. 25. L. Ciavatta; 0. Ferri; I. Grenthe; F. Salvatore; K. Spahiu: Inorg. Chem.

1983, v. 22, 2088. 26. A.J. deBethune; T.S. Licht; N. Swendeman: J. Electrochem. Soc. 1959, v.

106, 616. 27. G.R. Choppin: Radiochim. Acta 1983, v. 132, 43. 28. 8. Allard: "Solubilities of Actinides in Neutral or Basic Solution"; in,

Actinides in Perspective, N.M. Edelstein (ed.), Pergamon Press, New York (1982).

29. Standard Methods for the Examination of Water and Wastewater, 15th ed., American Public Health Association, Washington, DC 20005 (1981).

30. J. Cone; L.E.S. Smith; W.A. VanHook: J. Chem. Thermodynamics 1979, v.11, 277.

31. J.L. Ryan; D. Rai: Polyhedron 1983, v. 2, 947. 32. E.H.P. Cordfunke; W. Ouwelt.'es; G. Prins; P. VanVlaanderen: J.

Chem.Thermodynamics 1983, v. 15, 1103. 33. K.H. Gayer; H. Leider: Can. J. Chem. 1957, v. 35, 5. 34. F.J. Mi Hero; D.R. SchrtiDer: Am. J. Sci. 1982, v. 282, 1508. 35. L. Ciavatta; D. Fern; J. Grenthe; F. Salvatore: Inorg. Chem. 1981, v.

20, 463. 36. L. Ciavatta; D. Ferri; M. Grimaloi; R. Palombari; F. Salvatore: J.

Inorg. Nucl. Chem. 1979, v. 41, 1175. 37. R.N. Sylva; M.R. Davidson: J.C.S. Oalton 1979, 46b.

38. J.P. ScanIan: J. Inorg. Nucl. Chem. 1977, v. 39, 635. 39. S. O'Cinneide; J.P. Scanlan; H.J. Hynes. J. Inorg. Nucl. Chem. 1975, v.

37, 1013. 40. A. Vainiotalo; 0. Makitie: Finn. Chem. Lett. 1981, 102. 41. L. Maya: Inorg. Chem. 1982, v. 21, 2895. 42. N.M. Nikolaeva: Izv. Sib. Otd. Akaa. Nauk SSSR, Ser. Khim Nauk 1978, v.

4, 91. Chem. Abstr. 1978, v. 89, 169927f, 424. 43. M. Markovic; N. Pavkovic: Inorg. Chem. 1983, v. 22, 978. 44. C.F. Baes; N.J. Meyer: Inorg. Chem. 1962, v. 1, 780. 45. K.H. Gayer; H. Leiaer: J. Am. Chem. Soc. 1955, v. 77, 1448. 46. N.P. Eansal; J.A. Plambeck: Can. J. Chem. 1980, v. 59, 1515. 47. S.L. Phillips: "Hydrolysis arid Formation Constants at 25° C",

43. I. Grenthe; D. Ferri; F. Salvatore; G. Riccio: J. Chem. Soc. Dalton Trans. 1984, 996.

49. I. Grenthe; K. Spahiu; G. Olofsson: Inorg. Chiro. Acta 1984, v. 95, 79. 50. E.H.P. Cordfunke; P.A.G. O'Hare: "The Chemical Thermodynamics of Actiniae

Elements and Compounds. Part 3. Miscellaneous Actinide Compounds;1

International Atomic Energy Agency, Karntner Ring 11, P. 0. Box 590, A-1011 Vienna, Austria (January 1978).

51. J. Fuger; V.B. Parker; H.N. Hubbard; F.L. Oetting: "The Chemical Th^rmodyr-amics of Actinide Elements and Compounds. Part 8. The Actinide Hal ides;' International Atomic Energy Agency, Karntner Ring 11, P.O. Box 590, A-1011 Vienna, Austria (December 1983).

52. F. Schreiner; A.M. Friedman; R.R. Richards; J.C. Sullivan: "Microcalorimetric Measurement of Reaction Enthalpies in Solutions of Uranium and Neptunium Compounds", C0NF-840807-2, Argonne National Laboratory, Argonne, IL (August 1984).

ATTACHMENT II

A.E. Ogard; J.F. Kerrisk: "Groundwater Chemistry Along Flow Paths Between a Proposed Repository Site and the Accessible Environment". UR-LA-101d8-MS. Los Alamos National Laboratory, Los Alamos, NM 37545 (1984). Includes only Chapter 5 - Geochemistry. U.S.Environmental Protection Agency: "Working Draft No. 3 - Final 40 CFR 191, Subchapter F, Part 191. Environmental Radiation Protection Standards for Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Radioactive Wastes", Washington, DC (2/1/84). Includes only Appendix A - Tables for Part 191.

CHAPTER 5 - GEOCHEMISTRY

5.1 Ground-water Composition

5.1.1 Speculations on the Chemistry of Watar in tha Unaaturatad Zor*

At present, there are no available ground-water composition data fov samples from tha unsaturated zona at Yucca Mountain. According to tha niWSI Program Flan (LAM., 1984), samples will be taken during construction of the exploratory shaft. It has been suggested (Ogard and Kerrisk, 1984) that water in the unsaturated zone will be similar in composition to watar sampled in the saturated cone of Yucca Mountain. According to this modi 1, the probable composition of any water at Yucca Mountain can be bounded by the compositions of water from the following wells: USU-H3 (water below the repository), UE25p-l (water in the Paleozoic aquifer), J-13 (water in the aquifer surrounding Yucca Mountain), and snow or rain (juvenile recharge) (Figure 5-1 and Table T-l). This hypothesis is supported by data from four types of research: 1. water chemistry studies of the saturated zona at Yucca Mountain; 2. water chemistry studies of the unsaturated zone at Rainier Mesa in the UTS; 3. experimental studies of tuff-water interactions; and 4. theoretical calculations of mineral-water equilibria and reaction pathways. Ogard and Kerrisk (1984) suggest that because no saline water has been found in the tuff layers at Yucca Mountain and because the slow dissolution of volcanic glass does not lead to high concentrations of dissolved solids, water In the pores of the unsaturated zone is similar to that sampled In the wells listed above. The chemistry of waters in these wells is dominated by the reaction of vitrle tuff and rain water and the production of secondary minerals. The approximate composition of water within the unsaturated zone, therefore, may lie between the compositions of rain water and the end-member water compositions represented by the veils listed above. The exact composition of pore fluid in any particular rock unit will depend upon the degree and nature of reactions with the surrounding wall rock, and thus may differ for different rock types and ground-wcter ages. For example, Ogard and Kerrisk (19B4) suggest that the composition of water in the pores of unsaturated vitric tuff may differ from water In unsaturated devitrlfied tuff. Fluids in the latter rock may be higher in relative calcium content and lower in relative sodium contents than the watc-o described In Table 5-1. Water in equilibrium with zeolltic or vitrlc tuff should be similar to the water described in these tables. Kerrisk (1984) suggests that water at Rainier Mesa provides a useful analog for the compositions of waters in fractures and matrix in the unsaturated zone at Yucca Hountaln. The data obtained in the studies described above will bo preeented in more detail in the sections that follow.

Tabla S-1. Water compositions

J-13 UE25p-l USW-H3

Ha+ (mm/1) 1.96 K+ (mm/1) 0.14 C a 2 + (mm/l) 0 .29 M s 2 + Cnrn/1) 0.07 S i 0 2 ( a q ) (nra/1) 1.07 CO§-(total>(nBB/l) 2 .81 CI" (ran/l) 0 .18 S0 |~ Cmm/1) 0.19 F" (mm/1) 0 .11 PH 7.0 Eh (mV) 700 TDS (mfi/l) 130.4

7.43 S.39 0.34 0.04 2.19 0 .02 1.31 0 .00 0.62 0 .60 16 .1 4 .04 1.04 0 .23 1.34 0.32 0 .18 0 .28 6.7 9.4 360 -143 504.22 189.3

Table 5.1-1. Kleaental concentration! in (round wetera fro* the vicinity of Yucca Mountain

((Otard and Xarriak, 1914)

Held pH

Concentration (x/t)

Hel l Ko. Held pH Ca Mg Na K LI Fc Mn Al SI

UStf V H - l b 7.5 X1 1.5 60 1.9 0.090 23

USW H-6 7 .4 r.5 0.22 74 2 .1 0.10 0.12 0.04 0.12 20.0 USW H-3 9 .4 0 .8 0.01 124 1.5 0.22 0.13 0.01 0.51 16.9 USU H-5 7.1 1.1 0.03 54 2 . 3 0.04 0.01 N.D. 0.17 17.4 USW G-4 .'.I 9 . 2 0.15 56 2 . 5 0.08 0.04 0.02 0.02 19.6 OSW H - l b 7 .5 6 .2 <0.1 51 1 .6 0.04 19

USW H-4 7 . 4 10.6 0.19 84 2 . 6 0.16 0.03 0.005 0.04 25.9 UE-25bffl c 7.7 19.7 0.68 56 3 . 3 0.28 0.04 0.004 0.03 31.5 UE-25b01 d 7.2 18.4 0.68 46 2 . 5 0.30 0.69 0.36 0.04 26.7 UE-25bfU* 7.3 17.9 0.66 37 3 .0 0.17 0.08 0.07 0.06 28.8 J - 1 3 6.9 11.5 1.76 45 5 .3 0.06 0.04 0.001 0.03 30.0 UE-29a#2 7 .0 11.1 0.34 51 1.2 0.10 0.05 0.03 0.04 25.8 J - 1 2 b 7.1 14 2 .1 38 5 .1 25

UE-Z5p#l 6.7 87.8 31.9 171 13.4 0.32 <0.1 <0.1 0 .1 30

a. Ionic or molecular species are not liatad; concentration is based on the element.

b. Data from Benson and others (1983). c. Integral water aairple. d. Bullfrog rone, 4th day. t. BullfrOB zone, 28th day.

labia 5.1-2 Anion concentration! and othar •aaauraawnti for (round waters from tha

vicinity of Yucca Mountain (Cfcard and Karrisk, 1984)

(•s/t)

Veil Ho. F" Cl" < aco^ H0j HO; °2 Detergent Eh* USW VH-l b 2.7 10 45 165 USW H-6 4.1 7.7 27.5 N.D.C 5.3 5.6 395 USW H-3 5.4 B.3 31.2 <0.10 0.2 <J.l <0.02 -143 USW H-5 1.3 5.7 14.6 H.D. 8.6 6.3 <0.005 353 USW G-4 2.4 5.5 15.7 N.D. 5.5 6.4 402 USW H-l b 1.0 5.8 19 122 USW H-4 4.5 6.2 23.9 N.D. 4.7 5.8 >2 216 UE-25b*ld 1.2 7.1 20.6 N.D. 0.6 l.B 220 UE-2Sb»l" 1.5 9.8 21.0 0.5 2.2 <0.1 2.7 -18 UE-25b*lf 1.2 6.6 20.3 H.D. 4.5 1.8 0.02 160 J-13 2.1 6.4 1B.1 N.D. 10.1 5.7 N.D. UE-29a»2 0.56 8.3 22.7 N.D. 18.7 5.7 305 J-I2b 2.1 7.3 22 119 UE-2SpSl 3.5 37 129 N.D. <0.1 <0.2 360

a. nV vs. H-> electrode. b. Data from Benson and others (1983). c. Not detected. d. Integral water sample. e. Bullfrog rone, Ath day. f. Bullfrog zone, 28th day.

Table 5.1-3 Coatpoaltlons of (round watera froa Yucca Mountain walla "thief taaplei"

(Oaard and Kerriak, 1984) Hell Do. Depth

Concentration (ag/t)

(•) E«_ Ca _Mg_ Na K Li Fe Mn Al Si USU H-1 610 7.2 3.5 0.20 106 6.4 0."07 0.02 0.11 0.02 3.6 9:5 7.0 5.2 0.09 153 1.4 0.09 0.14 0.08 0.03 11.5 1220 6.0 1.7 0.07 166 1.4 0.11 0.03 0.04 0.02 12.9 1600 7.6 6.2 0.15 120 2.2 0.14 0.21 0.15 0.02 16.1

' USU H-4 628 8.7 8.0 0.35 H4 4.1 0.26 . 0.05 0.09 0.04 11.3 683 6.6 7.3 0.21 107 3.5 0.34 0.12 0.J0 0.04 26.4 721 8.6 6.3 0.23 109 3.4 0.40 0.20 0.0B 0.06 26.5 792 8.4 12.4 0.25 105 3.2 0.38 0.86 0.13 0.05 26.3 869 9.6 3.9 0.14 99 3.8 0.33 0.01 <0.01 0.06 26.4 908 8.6 12.8 0.25 92 3.5 0.27 <0.05 0.08 0.08 25.9 1036 8.7 11.4 0.22 93 3.2 0.26 0.16 0.08 0.09 25.4 1187 8.6 7.7 0.16 98 3.3 0.21 <0.05 0.03 0.06 26.0

USU H-1 Integral

7.5 6.2 <0.1 51 1.6 0.04 19

USU H-4 Internal

7.4 10.8 0.19 e* 2.6 0.16 0.03 0.005 0.04 25.9

Oato from Benson and others (1983).

Daniels, W. R., Erdal, B. R., and Vaninan, D. T., 1983, Research and development related to the Nevada Nuel'tar Wast* Storage Investigations, July 1 - September 30, 1962: Los Alaavs 1st. Lab., LA-9577-PR.

Guraghian. A. E., 19B3, TRIPM: A two-dln*niion.il finite-alwaent model for the simultanecw: transport of water and reacting aolutes through saturated and unsaturated media: Betelle Office of Nuduar Waste Isolation. ONUI-465, 150 p.

Cuzowsxi, 3. V.. Biniek, F. B., Siegel, H. D., and Finley, «. C , 1983, Repository site data report for tuff: Yucca Mountain, Nevada: Nuclear Regulatory Commission, IIUREG/CR-2937, SAND82-2105, 312 p.

HerriBk, J., 1984a, Reaction-path calculations of groundwater chemistry a..* silneral formation at Rainier Mesa, Nevada: Los Alamos Nat. Lab., LA-9912-HS. 40 p.

Kerrisk, J., 1984b, Solubility limits on radionuclide dissolution at a yucca Mountain Repository: Los Alamos Nat. Lab., LA-9995-MS, 54 p.

LA3L, 1964, DOE presentation vlewgraphs from the NNUSI/NRC geochemistry workshop, July 10-12, 1984, Los Alamos Nat. Lab.

Llndberg. R. D., and Runnells, D. D., 1984, Ground water redox reactions: an analysis of equilibrium state applied to Eh measurements and geochemieal modeling: Science, V. 225, p. 925-927.

Ogard, A. E., Daniels, V. R., and Vaniman, D. T., 1983t, Research and development related to the Nevada Nuclear Waste Storage Investigations, October 1 - December, 1982: Los Alamos Nat. Lab., LA-9666-PR, 53 p.

Ogard, A. E., and others, 1983b, Research and development related to the Nevada Nuclear Waste Storage Investigations, April 1 - June 30, 1983: Los Alamos Nat. Lab., LA-9846-FR, 107 p.

Ogard, A. E., Wolfsberg, K., and Vanlman, D. T., 1983, Research and development related to the Nevada Nuclear Waste Storage Investigations April 1 - June 30, 1983: Los Alamos Nat. Lab., LA-9846-PE, 105 p.

Ogard, A. E., Wolfsberg, K., Daniels, W. R., Kerrisk, J., Rundberg, R. S. and Thomas, K. W., 1984, Retardation of radionuclides by rock units along the path to the accessible environment, in Scientific basis for nuclear waste management VII: North-Holland, New York, NY, p. 329-336.

O^ard, A. B., and Kerrisk, J. F., 1984, Groundwater chemistry along flow paths between a proposed repository site and the accessible environment, LOD AIBTODO Nat. Lab., UR-LA-10188-HS. 47 p.

Pin, F. G., and Witten, A. J., 1983, Numerical simulation of unsaturated floun and oeopago of contaminants from subgrade mill tailings disposal iron: Nuclear Regulatory Commission, NUREG/C8-3398.

-H.20-

********* WORKING DRAFT HO. 3 - FINAL 40 CFI 191 - 1/1/84 - FACE 17 *********

APPENDIX A - TABLES FOR PART 191

TABLE 1 - C0NCE3TIATX0NS IDENTIFYING BIGH-LEVEL RADIOACTIVE HASTES

UNDER 191.02(a)(1)

Fission Product Radionuclides

Concentration (curies per cubic aecer of waste)

Carbon-14 8

Cesium-135 800

Cesium-137 4600

Strontiun-90 7000

Technetium-99 3

Tin-126 • 1 A-?y other radionuclide with a half-life

greater than 20 years 700

Transuraaic Radionuclides

Concentration (nanocuries par gram of waste)

Plutoniun-241 - -

Any alpha-emitting transuranic

radionuclide with a half-life

groacer than 20 years

»** FOU EEVIEW UITHIH EP» AND OTHER FEDERAL AGENCIES *.-******»****

mix**** WORKING DRAFT NO. 3 - riNAL 40 CFR 191 - 2/1/84 - PAGE 18 *********

NOTE: In cases where a vaate corresponding to 191.02(a)(1) contains a

•Jjcture of radionuclides, it shall ba considered a high-level radioactive

waste for the purposes of this Part if the SUM of the ratioa of the

radionuclide concentrations to the concentrations in Table 1 exceeda one.

For example, if a waste containing radionuclides A, 3, and C'in

concentrations C a, C b, and C c > and if the concentration limits from

Table 1 are CL a > CL 0, end CL e, then Che waste shall be considered

high-level radioactive waate if the following relationship exists:

c a c b c c

— • — + — > 1 CL a CLb CLC

I.************, FOR REVIEW HITHIN EPA ANO OTHER FEDERAL AGENCIES **************

********* WORKING DRAFT BO. 3 - FINAL 40 C » 191 - 2/1/84 - PAGE 19 --«-«---*

TABLE 2 - RELEASE LIMITS FOR CONTAINHEHT REQUIREMENTS (Cumulative Ralaaaaa to Che Accaaaible Environment

for 10,000 Year* After Disposal)

Radionuclide Releaae Liait (curie*)

Americiuo-241 100 Americiura-243 100 Carbon-14 100 Cesium-135 1000 Cesium-137 1000 Neptunium-237 _ _ - _ _ _ _ _ _ _ _ IQQ

Plutonium-238 100 Plutonium-239 100 Plutonium-240 100 Plutoniunr-242 100 Radiun-226 100 Strontium-90 1000 Technetiuo-99 10000 Tin-126 1000 Any other alpha-emitting

radionuclide _ _ _ _ - - - - - _ _ _ _ _ - - . _ - - - \QO

Any other radionuclide that does not emit alpha particles _ _ - _ _ _ _ _ _ _ _ NJQO

.---»--•---«* FOR REVIEW WITHIN EPA AND OTHER FEDERAL AGENCIES --------------

**«»*»««« WORKING DRAFT NO. 3 - FINAL 40 CFR 191 - 2/1/84 - PAGE 20 ««»*«*«*»

NOTE 1: The Release Limits in Table 3 apply Co the amount of wastes in

any ono of the following:

(a) an amount of spenc nuclear fuel containing 1,000 metric tons of

heavy metal (HTHM);

(a) Che high-level wastes, a* defined by 191.02(e)(1), generated from

each 1,000 MTHM;

(b) each 100,000,000 curies of gamma or beta-emitting radionuclides

with half-lives less Chan 100 years chat are identified by Che Commission as

high-level waste in accordance with 191.02(e)(2);

(c) each 1,000,000 curies of other radionuclides (gamma oi beta-emitters

vich half-lives greater than 100 years or any alpha-emitters) that are

identified by Che Commission as high-level waste in accordance with

191.02(e)(2); or

(d) an amount of cranfuranic (TRU) wastes, as defined by 191.02(f),

containing one million curies of alpha-emitting Cransuranic radionuclides.

To develop Release Limits for a particular disposal system, che

quantities in Table 3 shall be adjuaCed for Che amount of wastes included in

Che disposal sysCem. For example:

(a) If a particular disposal system contained the high-level wastes

from 50,000 MTHM, Che Release Limits for Chat system would be Che quancicies

in Table 3 multiplied by SO (50,000 MTHM divided by 1,000 MTHM).

>»..»«»««»«*» TOR REVIEW WITHIN KPA AND OTHER FEDERAL AGENCIES *««««««««««««<?

********* HOHCING DRAFT HO. 3 - FINAL 40 CF1, 191 - 2/1/84 - PACE 21 ««**«****

(b) If a particular diapoaal syatem contained thraa million curiaa of alpha-emitting tranauranic waataa, too Release Limits for that ayicem would be the quantities in Table 3 multiplied by three (three Billion curies divided by one million curies).

(c) If a particular disposal system contained both the high-level wastes from 50,000 MTHM and_ 5 million curies of alpha-emitting trihauranic wastes, the Release Limits for that system would be the quantities in Table 3 multiplied by 55:

50,000 MTHM 5,000,000 curies TRtI • . 55

1,000 MTHM 1,000,000 curies TRU

NOTE 2: In cases where a mixture of radionuclides is projected to be released, the limiting values shall be determined as follows: For each radionuclide in the mixture, determine the ratio becween the cumulative release quantity projected over 10,000 years and the limit for that radionuclide as determined from Table 2 and Note 1. The sum of such ratios for all the radionuclidea in the mixture may not exceed one.

For example, if radionuclidea A, B, and C are projected to be releassd in amounts Q (, Q),, and Q c, and if the applicable Release Limits are RL a, RL b > and SL C, then the cumulative releases over 10,000 years shall be limited so that the following relationship exists:

Pa % Qc RL a RL b RL C ~

************* FOE REVIEW WITHIN EPA AND OTHER FEDERAL AGENCIES

ATTACHMENT III

Attachment 1s from: Savannah River Operations Office, Strategy Document, "Long-Term Technology Program for Defense High-Level Waste", DOE/SR-WM-79-3, Savannah River Operations Office, Aiken, SC (May 1984'). Figure 1, only.

ACTIVITV FISCAl YEAR

ACTIVITV M IS u i ; I I 19 90 91 92 9i M 95 9S 9) 91 M N •1 12 •3 M •S - 17 M

I. SRP W«B 1. NEPA OaoimMUtiea IPioaiaral 2. Aoaa Terminal Slatafe Of t iMt 3. NEPA DacuaMUtiM (Piaj.fpeeificl 4. fracas ft Equip. D« . & Oaten Sudln 5 Facliiy Desifa » CMS). 1 . OptntiM ta MiaiawiH laveataty

I I . Harrfaid Waste 1. NEPA Daaimemation (PlOfriml 2. Ci, Sf EaceuuiUlt, Slora. Raaackaaa. Ship 3. la-crtu Disposal of S.S. Tank W a l l ( I K . Oenlop. ft Demol 4. NEPA DKumatation (Piaj.-Speciliel foi BIPP* I Prams « Equip. C M . S D««jn Studin for BIPP ( . BIPP Facility Oaii|n t Conjunction 7. Operation ta Maimum InvSRlary

III. IdakoWtltt 1. HEPA Documentation 2. Assets Terminal Sloraae Options 3. NEPA OocumentctiHi (P:oj. Specific) 4. Process & Equip. On. & Oeuan Studies 5. Feebly Design & Construction 1. Operation lo Minimum Inventory

IV. WIPP 1 1. Operational add Ready lo Receive 1 Demonslrition 0HL.W Forms

Co Co Co

led Ud lid

1 ' . +

V V T 1 < 1

- J - -

1 - J - -

IV. WIPP 1 1. Operational add Ready lo Receive 1 Demonslrition 0HL.W Forms ^ 1

"Shown tor planning pu'potM. Tin amact rtanura of NEPA documamaiiort {if raquirad) would ba datinad in part by raporuaa to tha proflrafnmatie ElS-

Thi i report was done with support from the Department of Energy. Any conclusions or opinions expressed in this report represent solely these of the auihorfs} and not necessarily those of The Regents of the University of California, the Lawrence Berkeley Laboratory or the Department of Energy.

Reference to a company or product name don not imply approval or recommendation of the product by the University of California or the U.S. Dcpa:tmcnt of Energy to the exclusion of others that may be suitable.

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