Chapter 19, Problem 107FP

Interpretation Introduction

Interpretation:

To describe how to calculate the standard potential of the ${\text{Fe}}^{\text{2+}}/\text{Fe}\left(\text{s}\right)$ from those of ${\text{Fe}}^{\text{3+}}/{\text{Fe}}^{2+}$ and ${\text{Fe}}^{\text{3+}}/\text{Fe}\left(\text{s}\right)$

Concept introduction:

To calculate the standard potential of the ${\text{Fe}}^{\text{2+}}/\text{Fe}\left(\text{s}\right)$ from those of ${\text{Fe}}^{\text{3+}}/{\text{Fe}}^{2+}$ and ${\text{Fe}}^{\text{3+}}/\text{Fe}\left(\text{s}\right)$ first write reduction half reaction for the couple ${\text{Fe}}^{\text{3+}}/{\text{Fe}}^{2+}$ with $E^0$ values and then calculate $\Delta G^0{}_1$ .Then, Write standard reduction half reaction for the couple ${\text{Fe}}^{\text{+3}}\text{/Fe}$ values and then calculate $\Delta G^0{}_2$.