(a) Derive an equation to predict the time tF for the drop to evaporate completely in a large volume of still air. Show all steps. (b) Calculate the time in seconds for complete evaporation.

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
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A drop of liquid toluene is kept at a uniform temperature of 25.9°C and is suspended in air by a fine wire. The initial radius r1 = 2.00 mm. The vapor pressure of toluene at 25.9°C is PA1 = 3.84 kPa and the density of liquid toluene is 866 kg/m3. 

(a) Derive an equation to predict the time tF for the drop to evaporate completely in a large volume of still air. Show all steps.
(b) Calculate the time in seconds for complete evaporation.

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