Chapter 14, Problem 14.114SP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the overall reaction needs to be determined.

Concept introduction:

Balanced equation for a reaction is that equation in which the number of atoms of both the reactant and the product is same.

Interpretation Introduction

(b)

Interpretation:

Whether the mechanism is in consistent with the experimental rate law or not needs to be determined.

$\text{Rate=}k{[\text{NO}]}^2[{\text{O}}_{\text{2}}]$

Concept introduction:

At equilibrium, rate of forward reaction is equal to the rate of reverse reaction.

In the mechanism, the second step is the slow step. Hence, it is the rate determining step. From the first step of the mechanism, one mole of ${\text{N}}_{\text{2}}{\text{O}}_{\text{2}}$ is formed from two moles of NO.

Interpretation Introduction

(c)

Interpretation:

The rate constant k needs to be related to the rate constants for the elementary reactions.

Concept introduction:

The rate constant in chemical kinetics relates molar concentration of reactant to reaction rate. It is known as reaction rate coefficient and denoted by symbol k.