Chapter 12, Problem 49E

Interpretation Introduction

Interpretation: The time of $\text{45\%}$ completion of first order reaction is given. The rate constant and half life of this process are to be calculated.

Concept introduction: The half-life is defined as the time required for the concentration of reactant to be reduced to one-half of its initial value.

The change observed in the concentration of a reactant or a product per unit time is known as the rate of the particular reaction.

To determine: The rate constant of first order reaction.