Chapter 17, Problem 17.63P

(a)

Interpretation Introduction

Interpretation:

In an equilibrium reaction, ${\text{CO}}_{\text{(g)}}{\text{ + Fe}}_3{\text{O}}_{\text{4}}{}_{\text{(s)}}\stackrel{}{\rightleftharpoons }{\text{CO}}_{\text{2}}{}_{\text{(g)}}{\text{ + 3FeO}}_{\text{(s)}}$, the direction to which the equilibrium shifts when $\text{CO}$ is added has to be given.

Concept Introduction:

Comparison of ${\text{Q}}_{\text{c}}{\text{ and K}}_{\text{c}}$ :

When ${\text{Q}}_{\text{c}}{\text{ < K}}_{\text{c}}$, the reaction will proceed in right direction, $\text{reactants}\stackrel{}{\to }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ > K}}_{\text{c}}$, the reaction will proceed in left direction, $\text{reactants}\stackrel{}{\leftarrow }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ = K}}_{\text{c}}$, the reaction will remain unchanged, $\text{reactants}\stackrel{}{\rightleftharpoons }\text{products}$

(b)

Interpretation Introduction

Interpretation:

In an equilibrium reaction, ${\text{CO}}_{\text{(g)}}{\text{ + Fe}}_3{\text{O}}_{\text{4}}{}_{\text{(s)}}\stackrel{}{\rightleftharpoons }{\text{CO}}_{\text{2}}{}_{\text{(g)}}{\text{ + 3FeO}}_{\text{(s)}}$, the direction to which the equilibrium shifts when ${\text{CO}}_{\text{2}}$ is removed by adding solid $\text{NaOH}$ has to be given.

Concept Introduction:

Comparison of ${\text{Q}}_{\text{c}}{\text{ and K}}_{\text{c}}$ :

When ${\text{Q}}_{\text{c}}{\text{ < K}}_{\text{c}}$, the reaction will proceed in right direction, $\text{reactants}\stackrel{}{\to }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ > K}}_{\text{c}}$, the reaction will proceed in left direction, $\text{reactants}\stackrel{}{\leftarrow }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ = K}}_{\text{c}}$, the reaction will remain unchanged, $\text{reactants}\stackrel{}{\rightleftharpoons }\text{products}$

(c)

Interpretation Introduction

Interpretation:

In an equilibrium reaction, ${\text{CO}}_{\text{(g)}}{\text{ + Fe}}_3{\text{O}}_{\text{4}}{}_{\text{(s)}}\stackrel{}{\rightleftharpoons }{\text{CO}}_{\text{2}}{}_{\text{(g)}}{\text{ + 3FeO}}_{\text{(s)}}$, the direction to which the equilibrium shifts when ${\text{Fe}}_{\text{3}}{\text{O}}_{\text{4(s)}}$ is added has to be given.

Concept Introduction:

Comparison of ${\text{Q}}_{\text{c}}{\text{ and K}}_{\text{c}}$ :

When ${\text{Q}}_{\text{c}}{\text{ < K}}_{\text{c}}$, the reaction will proceed in right direction, $\text{reactants}\stackrel{}{\to }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ > K}}_{\text{c}}$, the reaction will proceed in left direction, $\text{reactants}\stackrel{}{\leftarrow }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ = K}}_{\text{c}}$, the reaction will remain unchanged, $\text{reactants}\stackrel{}{\rightleftharpoons }\text{products}$

(d)

Interpretation Introduction

Interpretation:

In an equilibrium reaction, ${\text{CO}}_{\text{(g)}}{\text{ + Fe}}_3{\text{O}}_{\text{4}}{}_{\text{(s)}}\stackrel{}{\rightleftharpoons }{\text{CO}}_{\text{2}}{}_{\text{(g)}}{\text{ + 3FeO}}_{\text{(s)}}$, the direction to which the equilibrium shifts when dry ice is added at constant temperature has to be given.

Concept Introduction:

Comparison of ${\text{Q}}_{\text{c}}{\text{ and K}}_{\text{c}}$ :

When ${\text{Q}}_{\text{c}}{\text{ < K}}_{\text{c}}$, the reaction will proceed in right direction, $\text{reactants}\stackrel{}{\to }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ > K}}_{\text{c}}$, the reaction will proceed in left direction, $\text{reactants}\stackrel{}{\leftarrow }\text{products}$

When ${\text{Q}}_{\text{c}}{\text{ = K}}_{\text{c}}$, the reaction will remain unchanged, $\text{reactants}\stackrel{}{\rightleftharpoons }\text{products}$