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P 8 - 3 B B The following reactions A k 1 D , - r 1 A = k 1 [ C A -

P8-3BB The following reactions
Ak1D,-r1A=k1[CA-CDK1A]
Ak2U,-r2A=k2[CA-CUK2A]
take place in a batch reactor.
Additional information:
k1=1.0min-1,K1A=10
k2=100min-1,K2A=1.5
CA0=1moldm3
(Adapted from a problem by John Falconer, University of Colorado.)
(a) Plot and analyze conversion and the concentrations of A, D, and U as a function of time. When would
you stop the reaction to maximize the concentration of D? Describe what you find.
(b) When does the maximum concentration of U occur? (Ans.: t=0.31min )
(c) What are the equilibrium concentrations of A,D, and U?
(d) What would be the exit concentrations from a CSTR with a space time of 1.0min ? Of 10.0min ?
Of 100min ?
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