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In an experimental determination of diffusivity of toluene in air, Stefan's method is being used. A vertical glass tube 3 mm in diameter is filled with liquid toluene to a depth of 20 mm from the top open end. After 275 hrs at 39.4°C and a total pressure of 1 atm., the level has dropped to 80 mm from

In an experimental determination of diffusivity of toluene in air, Stefan's method is being used. A vertical glass tube 3 mm in diameter is filled with liquid toluene to a depth of 20 mm from the top open end. After 275 hrs at 39.4°C and a total pressure of 1 atm., the level has dropped to 80 mm from

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
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Q-3 In an experimental determination of diffusivity of toluene in air, Stefan's method is being used. A vertical glass tube 3 mm in diameter is filled with liquid toluene to a depth of 20 mm from the top open end. After 275 hrs at 39.4°C and a total pressure of 1 at., the level has dropped to 80 mm from the top. Neglecting counter diffusion of air to replace the liquid, estimate the diffusivity.
Transcribed Image Text:Q-3 In an experimental determination of diffusivity of toluene in air, Stefan's method is being used. A vertical glass tube 3 mm in diameter is filled with liquid toluene to a depth of 20 mm from the top open end. After 275 hrs at 39.4°C and a total pressure of 1 at., the level has dropped to 80 mm from the top. Neglecting counter diffusion of air to replace the liquid, estimate the diffusivity.
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