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The reaction A → B is autocatalytic (i.e., the product itself is also participating in the reaction), yielding a rate expression of the form TA (mol/L. min) =-kCA CB k = 0.05 L/mol. min

The reaction A → B is autocatalytic (i.e., the product itself is also participating in the reaction), yielding a rate expression of the form TA (mol/L. min) =-kCA CB k = 0.05 L/mol. min

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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a. Calculate the residence time required in a CMFR at steady state to
achieve 80 percent conversion of A when the feed concentration
of A and B are 2 mol/L and 0.05 mol/L.


b. Because the reaction follows second-order kinetics, a PFR should
in theory yield a lower residence time and thus require a smaller
reactor volume than a CMFR. Is a PFR preferred over a CMFR
for the case of an autocatalytic reaction? State clearly the reasons
for either recommending or not recommending a PFR, based on a plot of −1/rA versus concentration. What combination of reactors will result in the smallest volume?

The reaction A → B is autocatalytic (i.e., the product itself is also participating in the reaction), yielding a rate expression of the form ra (mol/L · min) = − kCA CB k = 0.05 L/mol · min
Transcribed Image Text:The reaction A → B is autocatalytic (i.e., the product itself is also participating in the reaction), yielding a rate expression of the form ra (mol/L · min) = − kCA CB k = 0.05 L/mol · min
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