Chapter 13, Problem 13.1QP

What is meant by the rate of a chemical reaction? What are the units of the rate of a reaction?

Interpretation Introduction

Interpretation:

The meaning of rate of a chemical reaction and its units has to be explained.

Concept introduction:

Rate of a reaction: It represents the speed at which a chemical reaction runs.  How much concentration of reactants consumed and how much concentration of product formed in a unit of time is said to be rate of reaction.

• Rate of reaction depends on time, temperature, pressure, concentration, and $\text{pH}$ of the reaction.

Explanation of Solution

To explain rate of reaction

• If reaction rate is high the reaction complete very soon and give the corresponding products.
• If concentration of a chemical reaction is increased the rate of reaction also increases.
• If temperature of a chemical reaction is increased the rate of reaction also increases.

To represent units for rate of reaction

The units for the rate of a chemical reaction has to represented as follows

• For zero order reaction is ${\text{Ms}}^{\text{-1}}$
• For first order reaction is ${\text{s}}^{\text{-1}}$
• For second order reaction is ${\text{M}}^{\text{-1}}{\text{s}}^{\text{-1}}$
• For an n order reaction is ${\text{M}}^{\text{1-n}}{\text{s}}^{\text{-1}}$

Conclusion

The meaning of rate of a chemical reaction and its units was explained.