Chapter 17, Problem 17.28P

(a)

Interpretation Introduction

Interpretation:

$\Delta \text{ng}$ for the reaction, ${\text{MgCO}}_{\text{3(s)}}\stackrel{}{\rightleftharpoons }{\text{ MgO}}_{\text{(s)}}{\text{ + CO}}_{\text{2(g)}}$ has to be calculated.

Concept Introduction:

Relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$:

The relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$ is given by the following equation.

  ${\text{K}}_{\text{p}}{\text{ = K}}_{\text{c}}{\text{(RT)}}^{\Delta \text{ngas}}$

Where,

${\text{K}}_{\text{p}}$ is the equilibrium constant in terms of partial pressure

${\text{K}}_{\text{c}}$ is the equilibrium constant in terms of concentration

$\Delta \text{ngas = moles of gaseous product - moles of gaseous reactant}$

Only moles of gaseous products and reactants is used to calculate $\Delta \text{ngas}$

(b)

Interpretation Introduction

Interpretation:

$\Delta \text{ng}$ for the reaction, $2{\text{H}}_{\text{2}}{}_{\text{(g)}}{\text{+ O}}_{\text{2(g)}}\stackrel{}{\rightleftharpoons }{\text{ 2H}}_{\text{2}}{\text{O}}_{\text{(l)}}$ has to be calculated.

Concept Introduction:

Relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$:

The relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$ is given by the following equation.

  ${\text{K}}_{\text{p}}{\text{ = K}}_{\text{c}}{\text{(RT)}}^{\Delta \text{ngas}}$

Where,

${\text{K}}_{\text{p}}$ is the equilibrium constant in terms of partial pressure

${\text{K}}_{\text{c}}$ is the equilibrium constant in terms of concentration

$\Delta \text{ngas = moles of gaseous product - moles of gaseous reactant}$

Only moles of gaseous products and reactants is used to calculate $\Delta \text{ngas}$

(c)

Interpretation Introduction

Interpretation:

$\Delta \text{ng}$ for the reaction, ${\text{HNO}}_{\text{3(l)}}{\text{ + ClF}}_{\text{(g)}}\stackrel{}{\rightleftharpoons }{\text{ ClONO}}_2{}_{\text{(g)}}{\text{ + HF}}_{\text{(g)}}$ has to be calculated.

Concept Introduction:

Relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$:

The relation between ${\text{K}}_{\text{p}}$ and ${\text{K}}_{\text{c}}$ is given by the following equation.

  ${\text{K}}_{\text{p}}{\text{ = K}}_{\text{c}}{\text{(RT)}}^{\Delta \text{ngas}}$

Where,

${\text{K}}_{\text{p}}$ is the equilibrium constant in terms of partial pressure

${\text{K}}_{\text{c}}$ is the equilibrium constant in terms of concentration

$\Delta \text{ngas = moles of gaseous product - moles of gaseous reactant}$

Only moles of gaseous products and reactants is used to calculate $\Delta \text{ngas}$