Problem

The first-order irreversible reactionA(l) → B(g) + C(g)is carried out adiabatically in a C...

The first-order irreversible reaction

A(l) → B(g) + C(g)

is carried out adiabatically in a CSTR into which 100 mol/min of pure liquid A is fed at 400 K. The reaction goes virtually to completion (i.e., the feed rate into the reactor equals the product of reaction rate inside the reactor and the reactor volume).

How many moles of liquid A are in the CSTR under steady-state conditions? Plot the temperature and moles of A in the reactor as a function of time after the feed to the reactor has been shut off.

Additional information:

Temperature (K)

400

800

1200

k (min1)

0.19

0.32

2.5

HA (kJ/mol)

−38

−30

−22

HB (kJ/mol)

−26

−22

−18

HC (kJ/mol)

−20

−16

−12

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Solutions For Problems in Chapter 9