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The vapour pressure of water Pw in mm Hg at t°C is given by the equation 1668.21 log10 P = 7.96681 -- t + 228 A gaseous mixture at a total pressure of 1600 mm Hg and 100°C contains permanent gases and water vapour. The mole fraction of water vapour in the mixture is 0.12. The mixture is cooled at constant pressure. a) At what temperature will the first drops of condensed water appear? b) Using a basis of 100 kmol of initial mixture, how much water will be condensed when the temperature has reached 20°C?

The vapour pressure of water Pw in mm Hg at t°C is given by the equation 1668.21 log10 P = 7.96681 -- t + 228 A gaseous mixture at a total pressure of 1600 mm Hg and 100°C contains permanent gases and water vapour. The mole fraction of water vapour in the mixture is 0.12. The mixture is cooled at constant pressure. a) At what temperature will the first drops of condensed water appear? b) Using a basis of 100 kmol of initial mixture, how much water will be condensed when the temperature has reached 20°C?

Introduction to Chemical Engineering Thermodynamics
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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The vapour pressure of water P in mm Hg at t°C is given by the equation 1668.21 log10 PW = 7.96681 - t +228 A gaseous mixture at a total pressure of 1600 mm Hg and 100°C contains permanent gases and water vapour. The mole fraction of water vapour in the mixture is 0.12. The mixture is cooled at constant pressure. a) At what temperature will the first drops of condensed water appear? b) Using a basis of 100 kmol of initial mixture, how much water will be condensed when the temperature has reached 20°C?
Transcribed Image Text:The vapour pressure of water P in mm Hg at t°C is given by the equation 1668.21 log10 PW = 7.96681 - t +228 A gaseous mixture at a total pressure of 1600 mm Hg and 100°C contains permanent gases and water vapour. The mole fraction of water vapour in the mixture is 0.12. The mixture is cooled at constant pressure. a) At what temperature will the first drops of condensed water appear? b) Using a basis of 100 kmol of initial mixture, how much water will be condensed when the temperature has reached 20°C?
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