EXER 8 Calculations

7/28/2019 EXER 8 Calculations

1/14

Concentration of Methanol, x mass of pycnometer + methanol, g

0.95 24.8521

0.8 25.3339

0.6 25.8119

0.4 26.1522

0.2 26.4174

0.1 26.546

mass of empty pycnometer, g 16.4252

mass of pycnometer + water, g 26.6863

mass of water, g 10.2611

density of water, g.cm3 0.9956

Table 8.1. Density determination of varying concentrations of methanol usin


2/14

mass of methanol,g density of methanol, g/cm3

8.4269 0.817633747

8.9087 0.864381179

9.3867 0.910759911

9.727 0.943778074

9.9922 0.969509538

10.1208 0.981987163

g pycnometer


3/14

density of methanol, kg/m3

817.6337469

864.3811794

910.7599107

943.7780745

969.509538

981.9871632


4/14

Calibrating Liquid Average Flow Time, s vVscosity, cP Viscosity, P Density, kg/m3

water 10.52 0.7977 0.007977 995.6

ethanol 7.81 0.0961334 0.000961334 781.3918331

ethyl acetate 7.37 0.048709 0.00048709 887.6843417

Slope

B, m2

B. cm2

Y-Intercept

A, m2/s2

A, cm2/s2

Equation of line (for Poise)

R2

y= 1.43696E-06 - 7.56668E-05x

0.991049816

Table 8.2. Determination of calibration constant A and B for Cannon-Fenske viscometer

Table 8.3. Calibration line parameters and calibration constants

Figure 8.1. Calibration c

1.43696E-06

0.014369643

-7.56668E-05

7.56668E-05

0.756667629

1.43696E-06

0

0.0000001

0.0000002

0.0000003

0.0000004

0.0000005

0.0000006

0.0000007

0.0000008

0 0.002 0 .004

n/pt,

m2/s2


5/14


6/14

Concentration of Methanol, x Average Time, s 1/t2 n/pt, m2/s2

0.95 11.25 0.007901235 8.39099E-07

0.8 15.41 0.004211092 1.11832E-06

0.6 17.7 0.003191931 1.19544E-06

0.4 17.41 0.003299153 1.18732E-06

0.2 14.48 0.00476939 1.07608E-060.1 12.44 0.006461885 9.4801E-07

Equation of line (for Poise) y= 1.43696E-06 - 7.56668E-05x

Table 8.4. Data on the effect of concentration to viscosity for methanol

Figure 8.2. Effect of concentration on viscosity of methanol

0

0.005

0.01

0.015

0.02

0.025

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Viscosity,

P

Concentration, x


7/14

Density, g/cm3 Density of Methanol, kg/m3 Viscosity, P

0.817633747 817.6337469 0.00771835

0.864381179 864.3811794 0.014896152

0.910759911 910.7599107 0.01927098

0.943778075 943.7780745 0.019509124

0.969509538 969.509538 0.0151064840.981987163 981.9871632 0.011580812


8/14

Temperature, K Average time, s Density, kg/m3 Viscosity, mPa-s

298.15 10.95 789.6123955 0.526483

303.15 10.19 784.7895533 0.486514

308.15 9.98 779.9094578 0.450485

313.15 9.47 774.9698165 0.417934

318.15 9.02 769.96818430.388458

323.15 8.72 764.9019488 0.36171

Slope

S, J/mol-K

Y-Intercept

H, J/mol

Equation of Line

R2

Slope

Y-Intercept

Equation of Line

R2

Table 8.5. Standard molar free energy of methanol at different temperatures

y= -3.834522985x + 11010.56193

-3.834522985

3.834522985

11010.56193

11010.56193

Table 8.6. Line parameters for the plot of G vs. T

0.999644653

Table 8.7. Line parameters for the plot of viscosity vs. temperature

-6.57477E-06

0.002481048

y= -6.57477E-06x + 0.002481048

0.9946485459760

9780

9800

9820

9840

9860

9880

295

Standardm

olarfreeenergy,

J/mol


9/14

Viscosity, P Molar mass, g/mol Molar mass, kg/mol Planck's constant, kg-m2/s

0.000526483 32.042 0.032042 6.62606957E-34

0.000486514 32.042 0.032042 6.62606957E-34

0.000450485 32.042 0.032042 6.62606957E-34

0.000417934 32.042 0.032042 6.62606957E-34

0.000388458 32.042 0.032042 6.62606957E-340.00036171 32.042 0.032042 6.62606957E-34

FiFigure 8.3. Standard molar free energy vs. temperature plot

y = -3.8345x + 11011

R = 0.9996

300 305 310 315 320 325

Temperature, K

0

0.0001

0.0002

0.0003

0.0004

0.0005

0.0006

295 300

Viscosity,

P


10/14

Avogadro's Number nM hNp nm/hNp ln(nm/hNp)

6.02E+23 1.68696E-05 3.15125E-07 53.53294756 3.980297307

6.02E+23 1.55889E-05 3.132E-07 49.77289367 3.907470532

6.02E+23 1.44344E-05 3.11253E-07 46.37531891 3.836767398

6.02E+23 1.33914E-05 3.09281E-07 43.29858234 3.768119894

6.02E+23 1.2447E-05 3.07285E-07 40.50625116 3.7014563126.02E+23 1.15899E-05 3.05263E-07 37.96693246 3.636715582

ure 8.4. Viscosity vs. temperature plot

y = -7E-06x + 0.0025

R = 0.9946

305 310 315 320 325

Temperature, K


11/14

RTln(nm/hNp)

9866.436987

9848.346138

9829.641149

9810.409796

9790.7187599770.651381


12/14

Concentration, g/dL to, s t, s Specific Viscosity, (t-to)/to

1 0.673333333 4.473333333 5.643564356

0.75 0.673333333 2.656666667 2.945544554

0.5 0.673333333 1.286666667 0.910891089

0.25 0.673333333 0.87 0.292079208

0.1 0.673333333 0.716666667 0.064356436

slope

Y-Intercept

Equation of Line

Intrinsic Viscosity [n], dL/g

R2

slope

Y-Intercept

Equation of Line

Intrinsic Viscosity [n], dL/g

R2

0.958495635

Table 8.6. Viscosity functions for different NaCMC concentrations at 0.1 M NaCl

Table 8.7. Line parameters for reduced viscosity vs. concentration plot

y= 5.609818017x - 0.276181277

5.609818017

-0.276181277

-0.276181277

Figure

0.946510459

Table 8.8. Line parameters for inherent viscosity vs. concentration plot

1.435772813

0.586921755

y= 1.435772813x + 0.586921755

0.5869217550

1

2

3

4

5

6

0 0

Reducedviscosity,

dL/g


13/14

Reduced Viscosity (nsp/c), dL/g Relative Viscosity (n/no) ln(n/no)

5.643564356 6.643564356 1.89364862

3.927392739 3.945544554 1.372586981

1.821782178 1.910891089 0.647569672

1.168316832 1.292079208 0.25625271

0.643564356 1.064356436 0.062370331

.5. Reduced viscosity vs. concentration plot

y = 5.6098x - 0.2762

R = 0.9585

.2 0.4 0.6 0.8 1 1.2

Concentration, g/dL

0

0.5

1

1.5

2

2.5

0

Inherentviscosity,

dL/g


14/14

Inherent Viscosity, (1/c)ln(n/no), dL/g

1.89364862

1.830115975

1.295139344

1.02501084

0.623703307

igure 8.6. Inherent viscosity vs. concentration plot

y = 1.4358x + 0.5869

R = 0.9465

0.2 0.4 0.6 0.8 1 1.2

Concentration, g/dL

EXER 8 Calculations

Documents

Transcript of EXER 8 Calculations