Chapter 18.2, Problem 9LC

Interpretation Introduction

Interpretation: The explanation for what the size of the specific rate constant, k, indicates about the rate of a chemical reaction is to be stated.

Concept Introduction: The rate of a chemical reaction is generally expressed as the reactant’s concentration consumed and the product’s concentration formed per unit of time.

Answer to Problem 9LC

If the value of the rate constant, $k$ is large that means the product is formed quickly. If the value of the rate constant, $k$ is small that means the products are formed slowly.

Explanation of Solution

The expression for the rate of a first-order reaction is given as;

  $\text{Rate}=\text{k}\left[\text{A}\right]$

The value of the specific rate constant depends on the reaction condition and is determined through experiments. If the value of the rate constant, $k$ is large that means the product is formed quickly. If the value of the rate constant, $k$ is small that means the products are formed slowly.