Chapter 17, Problem 17A.7BE

(a)

Interpretation Introduction

Interpretation:

The units of a second order and third order rate constant has to be expressed if the rate laws are expressed in concentrations in molecules per cubic centimetre.

Concept Introduction:

Rate of a reaction:

Rate of a reaction is the change in concentration of reactant or product per unit time.  It is expressed in terms of decrease in concentration of any of the reactants and increase in concentration of any of the products.

Rate Law:

Rate law is experimentally determined and is used to predict the relationship between the rate of a reaction and concentration of the reactants.

For the general reaction:

    $\text{aA + bB }\stackrel{}{\to }\text{cC + dD}$

${\text{rate = k[A]}}^{\text{m}}{\text{[B]}}^{\text{n}}$

(b)

Interpretation Introduction

Interpretation:

The units of a second order and third order rate constant has to be expressed if the rate laws expressed in pressures in kilopascals.

Concept Introduction:

Rate of a reaction:

Rate of a reaction is the change in concentration of reactant or product per unit time.  It is expressed in terms of decrease in concentration of any of the reactants and increase in concentration of any of the products.

Rate Law:

Rate law is experimentally determined and is used to predict the relationship between the rate of a reaction and concentration of the reactants.

For the general reaction:

    $\text{aA + bB }\stackrel{}{\to }\text{cC + dD}$

${\text{rate = k[A]}}^{\text{m}}{\text{[B]}}^{\text{n}}$