Chapter 19, Problem 19.109SP

Interpretation Introduction

Interpretation:

Whether the value of standard reduction potential ${\text{E}}_{\text{cell}}^o$ will have negative or positive if the equilibrium constant $\text{K}$ value has less than one value is to be predicted. If the value of standard reduction potential ${\text{E}}_{\text{cell}}^o$ has zero value, then the value of the equilibrium constant $\text{K}$ is to be predicted.

Concept introduction:

The substances that have a higher reduction potential will undergo reduction at the cathode while the substances that have a lower reduction potential will undergo oxidation at the anode.

The expression to calculate the equilibrium constant is shown below:

$\Delta G_{\text{cell}}^o=-\text{RT}\ln \text{K}$

The expression to calculate the standard Gibbs free energy of the cell is shown below:

$\Delta G_{\text{cell}}^o=-{\text{nFE}}_{\text{cell}}^o$