Answered: Vapor Pressure, kPa at 0°C Diffusivity…

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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Question

Evaporation of liquid from a beaker.
A beaker filled with an equimolar liquid mixture of ethyl alcohol and ethyl acetate evaporates at 0^oC into still air at 101 kPa (1 atm).Assuming Raoult’s law, what is the liquid composition when half the ethyl alcohol has evaporated, assuming each component evaporates independently? Also assume that the liquid is always well mixed. The following data are available:

Vapor Pressure,
kPa at 0°C
Diffusivity in Air
m/s
6.45 x 10-6
-9-
9.29 x 10-6
Ethyl acetate (AC)
3.23
Ethyl alcohol (AL)
1.62

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