Compound Formula Compound Formula

s 705.63 Cesium ion g 457.96s 1669.8 Cesium chloride s CsCl 443.04s 1277 Benzene l 48.95s 3440 Benzoic acid s 385.2

Barium chloride s 858.6 Glucose s 1271Barium carbonate s 1213 Carbon (diamond) s C 1.90Barium hydroxide s 944.7 Carbon gas g C 716.67Barium oxide s BaO 548.1 Carbon dioxide g 393.509Barium sulfate s 1473.2 Carbon disulfide liquid l 89.41Beryllium hydroxide s 902.9999 Carbon disulfide gas g 116.70Beryllium oxide s BeO 609.4 Carbon monoxide g CO 110.525

s 402.96 Carbon tetrachloride liquid l 135.4Bromine ion l Br 121 Carbon tetrachloride gas g 95.98Bromine gas (monatomic) g Br 111.88 Phosgene g 218.8Bromine gas (diatomic) g 30.91 Ethane g 83.85Bromine trifluoride g 255.60 Ethanol liquid l 277.0

g 36.29 Ethanol gas g 235.3Cadmium oxide s CdO 258 Ethene g 52.30Cadmium hydroxide s 561 Vinyl chloride s 94.12Cadmium sulfide s CdS 162 Ethyne (acetylene) g 226.73Cadmium sulfate s 935 Methane g 74.87Calcium gas g Ca 178.2 Methanol liquid l 238.4Calcium ion g 1925.9 Methanol gas g 201.0Calcium carbide s 59.8 Methyl linoleate (biodiesel) g 356.3Calcium carbonate (Calcite) s 1206.9 Chloroform liquid l 134.47Calcium chloride solid s 795.8 Chloroform gas g 103.18Calcium chloride aqueous 877.3 Propane g 104.7

Phas

e Ho

f (kJ/mol) Ph

ase H

of

(kJ/mol)

Aluminium chloride AlCl3 Cs+

Aluminium oxide Al2O

3Aluminium hydroxide Al(OH)

3C

6H

6Aluminium chloride Al

2(SO

4)3

C7H

6O

2

BaCl2

C6H

12O

6

BaCO3

Ba(OH)2

CO2

BaSO4

CS2

Be(OH)2 CS2

Boron trichloride Bcl3

CCl4CCl4COCl

2

Br2

C2H

6

BrF3

C2H

5OH

Hydrobromic acid HBr C2H

5OH

C2H

4

Cd(OH)2

C2H

3Cl

C2H

2

CdSO4

CH4

CH3OH

Ca2+ CH3OHCaC

2C

19H

34O

2

CaCO3

CHCl3

CaCl2

CHCl3

aq CaCl2

C3H

8

Standard heats of formation of selected compounds

Compound Formula Compound FormulaCalcium phosphate s 4132 CO (aqueous, unionized) 419.26Calcium fluoride s 1219.6 HCO 689.93Calcium hydride s 186.2 Carbon trioxide 675.23Calcium hydroxide s 986.09 Monatomic chlorine gas g Cl 121.70

1002.82 Chloride ion 167.2Calcium oxide s CaO 635.09 Copper (II) oxide s CuO 155.2Calcium sulfate s 1434.52 Monatomic hydrogen g H 218.00Calcium sulfide s CaS 482.4 Water gas g 241.818Wollastonite s 1630 Water liquid l 285.8Cesium gas g Cs 76.5 Hydroxide ion 230Cesium liquid l Cs 2.09 Hydrogen peroxide l 187.8Phosphoric acid l 1288 Mercury (II) oxide (red) s HgO 90.83Hydrogen cyanide g HCN 130.5 Mercury sulfide (red) s HgS 58.2Hydrogen bromide l 36.3 Ammonia aqueous 80.8Hydrogen chloride gas g 92.30 Ammonia gas g 45.90Hydrogen chloride aq 167.2 Ammonium chloride s 314.55Hydrogen fluoride g HF 273.3 Nitrogen dioxide g 33.20Hydrogen iodide g HI 26.5 Nitrous oxide g 82.05Iodine gas g 62.44 Nitric oxide g NO 90.29Iodine aqueous 23 g 9.16Iodide ion 55 s 43.1Iron carbide (Cementite) s 5.4 g 11.30Iron (II) carbonate (Siderite) s -750.6 Monatomic oxygen g O 249.00Iron (III) chloride s 399.4 Ozone g 143.00

s FeO 272 l 319.7Iron (II, III) oxide (Magnetite) s 1118 g 278Iron (III) oxide (Hematite) s 824.2 s 440

Phas

e Ho

f (kJ/mol) Ph

ase H

of

(kJ/mol)Ca

3(PO

4)2

aq CO2(aq)

CaF2

HCO3

CaH2

CO3

Ca(OH)2

Calcium hydroxide (aq) aq Ca(OH)2

aq Cl

CaSO4

H2O

CaSiO3 H2Oaq OH

H2O

2H

3PO

4

HBr aq NH3

HCl NH3

aq HCl NH4Cl

NO2

N2O

I2

aq I2 Dinitrogen tetroxude N

2O

4

aq I Dinitrogen pentoxide solid N2O

5Fe3C Dinitrogen pentoxide gas N2O5FeCO3

FeCl3 O3

Iron (II) oxide (Wustite) Phosphorus trichloride PCl3

Fe3O

4 Phosphorus trichloride gas PCl3

Fe2O

3 Phosphorus pentachloride PCl5

3

2

Compound Phas

e

Formula Compound Phas

e

FormulaIron (II) sulfate s 929 Potassium bromide s 392.2Iron (III) sulfate s 2583 Potassium carbonate s 1150Iron (II) sulfide s FeS 102 Potassium chlorate s 391.4Pyrite s 178 Potassium chloride s 436.68Lead dioxide s 277 Potassium fluoride s KF 562.6Lead sulfide s PbS 100 Potassium oxide s 363Lead sulfate s 920 Potassium perchlorate s 430.12Lead (II) nitrate s 452 Silicon gas g Si 368.2Lead (II) sulfate s 920 Silicon carbide s SiC 73.22Magnesium ion 466.85 Silicon tetrachloride l 640.1Magnesium carbonate s 1095.797 Silica (quartz) s 910.86Magnesium chloride s 641.8 Silver bromide s AgBr 99.5Magnesium hydroxide s 924.54 Silver chloride s AgCl 127.01Magnesium hydroxide 926.8 Silver iodide s AgI 62.4Magnesium oxide s MgO 601.6 Silver oxide s 31.1Magnesium sulfate s 1278.2 Silver sulfide s 31.8Manganese (II) oxide s MnO 384.9 Sodium carbonate s 1130.77Manganese (IV) oxide s 519.7 Sodium chloride aqueous NaCl 407.27Manganese (III) oxide s 971 Sodium chloride solid s NaCl 411.12Manganese (II, III) oxide s 1387 Sodium chloride liquid l NaCl 385.92Permanganate ion 543 Sodium chloride gas g NaCl 181.42Sodium fluoride s NaF 569.0 Titanium gas g Ti 468Sodium hydroxide aqueous NaOH 469.15 Titanium tetrachloride g 763.2Sodium hydroxide solid s NaOH 425.93 Titanium tetrachloride l 804.2Sodium nitrate aqueous 446.2 Titanium dioxide s 944.7Sodium nitrate solid s 424.8 Zinc gas g Zn 130.7

Ho

f (kJ/mol)

Ho

f (kJ/mol)

FeSO4

KBrFe2(SO4)3 K2CO3

KClO3

FeS2KCl

PbO2

K2O

PbSO4

KClO4

Pb(NO3)2

PbSO4

aq Mg2+ SiCl4

MgCO3

SiO2

MgCl2Mg(OH)2

aq Mg(OH)2Ag

2O

MgSO4

Ag2S

Na2CO

3

MnO2

aq Mn

2O

3

Mn3O

4

aq MnO4

aq TiCl4TiCl

4

aq NaNO3 TiO

2NaNO3

Compound Formula Compound FormulaSodium oxide s 414.2 Zinc chloride s 415.1Hydrogen sulfide g 20.63 Zinc oxide s ZnO 348.0Sulfur dioxide g 296.84Sulfur trioxide g 395.7Sulfuric acid l 814

Phas

e Ho

f (kJ/mol) Ph

ase H

of

(kJ/mol)Na2O ZnCl2H

2S

SO2

SO3

H2SO

4