Question

The half-life period of a ______ order reaction is ______ on the concentration of the reactant.

Answer 1

The half-life period of a first order reaction is independent on the concentration of the reactant.

Explanation:

For a first-order reaction, the half-life is given by:

\[\ce{t_{1/2} = \frac{0.693}{k}}\]

It does not depend on the initial concentration [A]₀.

This is a unique characteristic of first-order reactions.

In contrast, for zero or second-order reactions, the half-life does depend on the concentration of the reactant.