Chapter 4, Problem 4J.9E

(a)

Interpretation Introduction

Interpretation:

The values of ${\text{ΔH}}^{\text{o}}{\text{,ΔS}}^{\text{o}}{\text{\&ΔG}}^{\text{o}}$ for the given reaction has to be given and the value of formation of Gibb’s free energy is confirmed by using the relation ${\text{ΔG}}^{\text{o}}{\text{=ΔH}}^{\text{o}}{\text{-TΔS}}^{\text{o}}.$

The given reaction is,

The oxidation of magnetite to hematite: ${\text{2Fe}}_{\text{3}}{\text{O}}_{\text{4}}\left(\text{s}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\stackrel{}{\to }{\text{3Fe}}_{\text{2}}{\text{O}}_{\text{3}}\left(\text{s}\right)$

(b)

Interpretation Introduction

Interpretation:

The values of ${\text{ΔH}}^{\text{o}}{\text{,ΔS}}^{\text{o}}{\text{\&ΔG}}^{\text{o}}$ for the given reaction has to be given and the value of formation of Gibb’s free energy is confirmed by using the relation ${\text{ΔG}}^{\text{o}}{\text{=ΔH}}^{\text{o}}{\text{-TΔS}}^{\text{o}}.$

The given reaction is,

The dissolution of ${\text{CaF}}_{\text{2}}$ in water: ${\text{CaF}}_{\text{2}}\left(\text{s}\right)\stackrel{}{\to }{\text{CaF}}_{\text{2}}\left(\text{aq}\right)$

(c)

Interpretation Introduction

Interpretation:

The values of ${\text{ΔH}}^{\text{o}}{\text{,ΔS}}^{\text{o}}{\text{\&ΔG}}^{\text{o}}$ for the given reaction has to be given and the value of formation of Gibb’s free energy is confirmed by using the relation ${\text{ΔG}}^{\text{o}}{\text{=ΔH}}^{\text{o}}{\text{-TΔS}}^{\text{o}}.$

The given reaction is,

The dimerization of ${\text{NO}}_{\text{2}}$ : ${\text{2NO}}_{\text{2}}\left(\text{g}\right)\stackrel{}{\to }{\text{N}}_{\text{2}}{\text{O}}_{\text{4}}\left(\text{g}\right)$