Answered: TABLE P12-29 Vapor-liquid equilibrium…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Related questions

Question

In Problem 12-18 in this section, you used a
gamma-phi modeling approach for the pentafluoroethane
[R-125] (1) 1 isobutane (2) system
at 308C. There (if you solved that problem), you
realized the benefit of incorporating a gamma-phi
approach (i.e., treating the vapor phase as a real
gas rather than an ideal gas) as compared to
using modified Raoult’s law.
In this problem repeat the gamma-phi modeling,
but treat the vapor-phase as an ideal solution.
Here, you are not including the composition effects
on the fugacity coefficient, but modeling it
as a pure component at the mixture temperature
and pressure. Plot both results (the full gammaphi
approach from Problem 12-18 and the current
approach) as well as the experimental data
(as symbols). Additionally, report the following
information in tabular form:
The experimental activity coefficients for both
approaches
The ratio of the mixture fugacity coefficient of
component i to the saturation fugacity coefficient
of component. What can you conclude about the ideal solution
approach to the vapor phase in the context of this
problem?