Chapter 5, Problem 5J.10E

(a)

Interpretation Introduction

Interpretation:

The change in partial pressure of ${\text{SO}}_{\text{3}}$ when the partial pressure of ${\text{SO}}_{\text{2}}$ is decreased has to be given.

Concept Introduction:

Le-Chatlier’s principle:

If a chemical system at equilibrium experiences a change in concentration, temperature, volume, or partial pressure, then the equilibrium shifts to neutralize the imposed change and a new equilibrium is established.

Example:

  ${\text{2H}}_{\text{2}}\left(\text{g}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\stackrel{}{\to }{\text{2H}}_{\text{2}}\text{O}\left(\text{g}\right)$

Increasing the concentration of reactants shifts the equilibrium to the right side and thus concentration of the water also increases.

(b)

Interpretation Introduction

Interpretation:

The change in partial pressure of ${\text{O}}_2$ when the partial pressure of ${\text{SO}}_{\text{2}}$ is increased has to be given.

Concept Introduction:

Refer to part (a).