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The inlet concentration of A is 1M. If the outlet concentration of A is 0.1M, what are the reactor space time and the outlet concentrations of D and U when

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Homework 4

1. The following liquid-phase parallel reaction is carried out in flow reactors.

The inlet concentration of A is 1M. If the outlet concentration of A is 0.1M, what are the reactor space time and the outlet concentrations of D and U when

(a) a PFR is used.

( b ) a CSTR is used.

2. The following liquid-phase elementary series reaction is carried out in a CSTR.

(a) Determine the concentrations of A, B, and C as functions of space time.

(b) Find the optimum space time of CSTR and the corresponding conversion of A to maximize the concentration of B.

1 2

A → →

k

B

k

C

D

U

A D ,

2

, 1

A U , , 0.2

k

D D A D

k

U U A U

r k C k

r k C k

→ = =

→ = =

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