Answer to Question #296374 in Chemical Engineering for Lokika

Question

13)An aqueous feed containing reactant A with concentration of 1 mol/lit is taken in a batch reactor. The reaction is first order

rate constant of 0.5min^{1}

What is the time (in min)

required for 90% conversion?

A) 2.3

B) 4.6

C)2.0

D)4.0

Answer 1

C = C₀e^-kt

ln (C/C₀) = -kt

ln ((1 mol/l - 1 mol/l x 0.9) / 1 mol/l) = -0.5 min^-1 x t

t = 4.6 min

B) 4.6