Chapter 11, Problem 65QRT

(a)

Interpretation Introduction

Interpretation:

The fastest reverse reaction for the reactions in the question $61$ has to be identified.

Concept Introduction:

The Arrhenius equation is given below.

  $k=A{e}^{\frac{-E_a}{RT}}$

Where $k$ is the rate constant, $A$ is the frequency factor, $E_a$ is the activation energy, $R$ is the universal gas constant and $T$ is the temperature.

If the forward reaction is exothermic the activation energy for the reverse reaction can be calculated as follows,

    $E_r={\Delta }_r{H}^o+E_f$

If the forward reaction is endothermic the activation energy for the reverse reaction can be calculated as follows,

    $E_r=E_f-{\Delta }_r{H}^o$

(b)

Interpretation Introduction

Interpretation:

The slowest reverse reaction for the reactions in the question $61$ has to be identified.

Concept Introduction:

Refer to part (a).