Question

The unit of rate of reaction is ___________

(a) Mol L^-1 s^-1

(b) Mol L s^-1

(c) Mol L^-1 s

(d) Mol L s

This question was posed to me in unit test.

This question is from Order of a Reaction in section Reaction Dynamics of Engineering Chemistry I

Answer 1

The correct answer is (a) Mol L^-1 s^-1

To explain I would say: The unit of rate of reaction is Mol L^-1 s^-1. The reaction rate is defined as the rate at which the concentration of the reactants decreases with time or the concentration of products increases with time.