Q1: A layer of benzene 1.5 mm thick deep lies at the bottom of an open tank 5 mm in diameter. The temperature is 295 k and the diffusivity of benzene in air is 8 x 10* m'/s at this temperature. If the vapor pressure of benzene in the tank is 13.4 KN/m and the diffusion may be assumed to take place through a stagnant air 2.5 mm thick. Determine (1): the molar rate of diffusion with respect to Z (2): how long will take benzene to evaporate. Given the density of benzene is 880 kg/m' and molecular weight is 78. Air Film 2.5mm Benzene t1.5 mm
Q1: A layer of benzene 1.5 mm thick deep lies at the bottom of an open tank 5 mm in diameter. The temperature is 295 k and the diffusivity of benzene in air is 8 x 10* m'/s at this temperature. If the vapor pressure of benzene in the tank is 13.4 KN/m and the diffusion may be assumed to take place through a stagnant air 2.5 mm thick. Determine (1): the molar rate of diffusion with respect to Z (2): how long will take benzene to evaporate. Given the density of benzene is 880 kg/m' and molecular weight is 78. Air Film 2.5mm Benzene t1.5 mm
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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Transcribed Image Text:Q1: A layer of benzene 1.5 mm thick deep lies at the bottom of an open tank
5 mm in diameter. The temperature is 295 k and the diffusivity of benzene
in air is 8 x 10“ m/s at this temperature. If the vapor pressure of benzene
in the tank is 13.4 KN/m and the diffusion may be assumed to take place
through a stagnant air 2.5 mm thick. Determine (1): the molar rate of
diffusion with respect to Z (2): how long will take benzene to evaporate.
Given the density of benzene is 880 kg/m' and molecular weight is 78.
Air
Film
2.5mm
Z
Benzene
11.5 mm
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