Question

The Enhancement factor in liquid film is the ratio of ____

(a) Rate of take up of gas by straight mass transfer to the ate of take up of gas by reaction

(b) Rate of take up of gas by reaction to the rate of take up of gas by straight mass transfer

(c) Rate of reaction at the interface to the rate of take up of gas by straight mass transfer

(d) Rate of take up of gas by straight mass transfer to rate of reaction at the interface

I got this question in class test.

This question is from Design of Fluid Fluid Reactors in chapter Fluid-Fluid Reactions: Kinetics & Basics of Non Ideal Flow of Chemical Reaction Engineering

Answer 1

Right choice is (b) Rate of take up of gas by reaction to the rate of take up of gas by straight mass transfer

Easy explanation: Enhancement factor compares the rate of physical absorption to the rate of absorption in the presence of chemical reaction. The value of enhancement factor is greater than or equal to 1.