Question

If the conversion of a first order liquid phase reaction occurring in a CSTR is 75%, molar feed rate is 5 mol/min, the rate of the reaction is 5 \(\frac{mol}{litre.min} \) then the volume of the reactor (in litre) is ____

(a) 0.5

(b) 0.75

(c) 0.33

(d) 0.4

The question was asked during an interview for a job.

The above asked question is from Kinetics of Homogeneous Reactions topic in section Kinetics of Homogeneous Reactions of Chemical Reaction Engineering

Answer 1

Right answer is (b) 0.75

To explain: For a CSTR, the performance equation is FA0XA = (-rA)V

FA0 is molar feed rate and XA is the fractional conversion

5 × 0.75 = 5 × V

V = 0.75 L