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Listed below are the constants in three activity-coefficient equations: Wilson's, Margules' and van Laar's, for the...

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Chemistry

Listed below are the constants in three activity-coefficientequations: Wilson's, Margules' and van Laar's, for the systemethanol-water. In addition, the vapor-liquid equilibria at onepressure are tabulated.

a) Using the Wilson equation and the constants listed below,find the bubble pressure and vapor composition for a mixture of 30mol% ethanol at 90 C

b) Using the Wilson equation, find the dew pressure andcomposition for a mixture of 80 mol% ethanol at 110 C

c) Using the Wilson equation, find the bubble temperature andcomposition for a mixture of 20% ethanol at 3.0 bar

d) Using the Wilson equation, find the dew temperature andcomposition for a mixture of 40% ethanol at 3.0 bar

Data:

Pc, barTc, KωVcZc
Ethanol (1)63.0516.20.635167.0.248
Water (2)217.6647.30.34456.00.229

Antoine Constants

ABCRange (degrees C)
Ethanol (1)7.586671281.590193.76878-203
Water (2)8.01767

1715.700

234.268100-265
ConstantsA12A21
Margules'1.15420.7485
Van Laar1.47290.6772
Wilson437.7515847.0778

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