A mixture of 96% ethyl alcohol + 4% water by weight creates an azeotropic mixture. It is not possible to obtain pure alcohol by distillation of this mixture. In order to obtain pure alcohol, the azeotropic property of a mixture of 18.5% ethyl alcohol + 7.4% water + 74.1% benzene is used. If a sufficient amount of benzene is added to the 96% ethyl alcohol solution and distilled, pure alcohol is obtained as the base product and the azeotropic mixture, the composition of which is given above, is obtained as the top product. In such a distillation process, if 100 kg of 96% ethyl alcohol enters the distillation
A mixture of 96% ethyl alcohol + 4% water by weight creates an azeotropic mixture. It is not possible to obtain pure alcohol by distillation of this mixture. In order to obtain pure alcohol, the azeotropic property of a mixture of 18.5% ethyl alcohol + 7.4% water + 74.1% benzene is used. If a sufficient amount of benzene is added to the 96% ethyl alcohol solution and distilled, pure alcohol is obtained as the base product and the azeotropic mixture, the composition of which is given above, is obtained as the top product. In such a distillation process, if 100 kg of 96% ethyl alcohol enters the distillation
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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Title
A mixture of 96% ethyl alcohol + 4% water by
weight creates an azeotropic mixture. It is
not possible to obtain pure alcohol by
distillation of this mixture. In order to obtain
pure alcohol, the azeotropic property of a
mixture of 18.5% ethyl alcohol + 7.4% water
+ 74.1% benzene is used. If a sufficient
amount of benzene is added to the 96% ethyl
alcohol solution and distilled, pure alcohol is
obtained as the base product and the
azeotropic mixture, the composition of
which is given above, is obtained as the top
product. In such a distillation process, if 100
kg of 96% ethyl alcohol enters the distillation
column;
a) How many kg of benzene should be
added?
b) What percentage of alcohol converts to
absolute alcohol?
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