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26) Alcohol vapour is diffusing through a layer of water vapour under equimolar counter diffusion at 35°C and 1 atm pressure. The molal concentration of alcohol on the two sides of the gas film (water vapour) 0.3 mm thick are 80% and 10% respectively. Assume the diffusivity of alcohol-water vapour to be 0.18 cm²/s, (i) calculate the rate of diffusion of alcohol vapour through an area of 100 cm² (ii) if the water vapour layer is stagnant, estimate the rate of diffusion of alcohol vapour.

26) Alcohol vapour is diffusing through a layer of water vapour under equimolar counter diffusion at 35°C and 1 atm pressure. The molal concentration of alcohol on the two sides of the gas film (water vapour) 0.3 mm thick are 80% and 10% respectively. Assume the diffusivity of alcohol-water vapour to be 0.18 cm²/s, (i) calculate the rate of diffusion of alcohol vapour through an area of 100 cm² (ii) if the water vapour layer is stagnant, estimate the rate of diffusion of alcohol vapour.

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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26) Alcohol vapour is diffusing through a layer of water vapour under equimolar counter diffusion at 35°C and 1 atm pressure. The molal concentration of alcohol on the two sides of the gas film (water vapour) 0.3 mm thick are 80% and 10% respectively. Assume the diffusivity of alcohol-water vapour to be 0.18 cm²/s, (i) calculate the rate of diffusion of alcohol vapour through an area of 100 cm² (ii) if the water vapour layer is stagnant, estimate the rate of diffusion of alcohol vapour. 120
Transcribed Image Text:26) Alcohol vapour is diffusing through a layer of water vapour under equimolar counter diffusion at 35°C and 1 atm pressure. The molal concentration of alcohol on the two sides of the gas film (water vapour) 0.3 mm thick are 80% and 10% respectively. Assume the diffusivity of alcohol-water vapour to be 0.18 cm²/s, (i) calculate the rate of diffusion of alcohol vapour through an area of 100 cm² (ii) if the water vapour layer is stagnant, estimate the rate of diffusion of alcohol vapour. 120
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