Question

Refer to Q3, and estimate the unit of Km?

(a) kg mol m^-2

(b) kg mol

(c) kg mol m^-1

(d) kg mol m^-3

The question was posed to me in an interview.

The question is from General Reaction Kinetics for Biological Systems topic in division Homogenous Reactions of Bioprocess Engineering

Answer 1

Correct choice is (d) kg mol m^-3

To explain: Km is the Michaelis constant for reactant A. Km has the same dimensions as CA. Typical units for Vmax are kgmol m^-3 s^-I; typical units for Km are kgmolm^-3.