Question

For the consecutive reactions A ‹ B‹C, k₁=0.35/h, k₂=0.13/h, C_A0=4 lbmol/ft concentration of B is maximum.and C_B0=0, C_C0=0. Find the time when the concentration of B is maximum.

1. 7.2 hrs                  b.             6.5 hrs                   c.            4.6 hrs                  d.            3.9 hrs

2. Based from the preceding problem, what is the maximum concentration of B in lbmols/ft3 if the reactor used is a single CSTR?

a.              1.85                     b.               2.01                      c.               1.22                    d.              2.32

Answer 1

Solutions k9. k A B C ki = 0.35/h kg = 0.13/h CAO = 4 lbmor/ft (Boa Cco=0 time when the Concentration of bis maximum as is given Toptium = 4.68 hrs ㅗ kik, 0.35x0.13 correct option, Therefore option (6) 4.6 is the And for maximum Concentration of B. relation, use the CB may = CAO [ckelkg2+1 2 w 4 그 CB, may 2x 2 (0.61+1)2 10-13 ti >> CB, may = 1:54 Abmet / 43.

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