Chapter 12, Problem 12.64SP

(a)

Interpretation Introduction

Interpretation:

The order of the given reaction has to be given.

Concept introduction:

Order of a reaction:

Order of a reaction is defined as the sum of exponents of the concentrations in the rate law of the given reaction.

(b)

Interpretation Introduction

Interpretation:

The molarity of $\text{A}$ after $\text{30}\text{.0}\text{min}$ reaction time has to be calculated.

Concept introduction:

Integrated rate law for a zeroth order reaction:

A zeroth order reaction is defined as the reaction whose rate not depends on the concentration of reactants.

$\begin{array}{l}{\left[\text{A}\right]}_{\text{t}}\text{=}{\left[\text{A}\right]}_{\text{0}}\text{-}\text{k}\text{t}\\ \text{where,}\\ {\left[\text{A}\right]}_{\text{t}}\text{-}\text{concentration}\text{of}\text{A}\text{at}\text{time}\text{t}\\ {\left[\text{A}\right]}_{\text{0}}\text{-}\text{concentration}\text{of}\text{A}\text{at}\text{time}\text{0}\\ \text{k}\text{-}\text{rate}\text{constant}\text{and}\text{t}\text{-}\text{time}\end{array}$

(c)

Interpretation Introduction

Interpretation:

The half-life period of the given reaction has to be calculated

Concept introduction:

Half-life period of a zeroth order reaction:

It is the time required for the reactant (substrate) concentration reduces to one-half of its initial concentration.

${\text{t}}_{\text{1/2}}\text{=}\frac{{\left[\text{A}\right]}_{\text{0}}}{\text{2}\text{k}}$