Chapter 20, Problem 13E

Interpretation Introduction

Interpretation:

The rate law for the following reaction is to be determined whose rate of reactions obtained in three different experiments is given.

${\text{2NO(g)+Cl}}_{\text{2}}\text{(g)}\to \text{2NOCl(g)}$

Concept introduction:

• The rate law of a reaction expresses the relationship between the concentration of the reactant species and the rate of that chemical reaction.
• Order is equal to the sum of the exponents of the concentration of reactant species in the rate law.

For example:

$\begin{array}{l}\text{A+2B+C}\to \text{D}\\ \text{Rate }\propto {\text{ [A][B]}}^2\\ \therefore {\text{Rate = k [A][B]}}^2\\ \text{where, k is the rate constant}\text{.}\\ \text{and}\\ \text{order of this reaction = 3}\\ \end{array}$