Chapter 15, Problem 15.2P

(a)

Interpretation Introduction

Interpretation:

Reaction that occurs at postive terminal has to be written and corresponding half-cell potential has to be calculated.

Concept Introduction: Cell potential is evaluated by expression as follows:

  $E_{\text{cell}}^{°}=E_{\text{oxidation}}^{°}+E_{\text{reduction}}^{°}$

Expression to compute $E_{\text{cell}}$ as per the Nernst equation is written as follows:

  $E_{\text{cell}}=E_{\text{cell}}^{°}-\frac{0.0592}{n}\log \frac{\left[P\right]}{\left[R\right]}$

Here,

• $E_{\text{cell}}$ denotes overall cell potential.
• $E_{\text{cell}}^{°}$ denotes standard cell potential.
• $n$ is the moles of electrons transferred in each reaction.
• $\left[P\right]$ denotes concentration of products.
• $\left[R\right]$ denotes concentration of reactant.

(b)

Interpretation Introduction

Interpretation:

Net cell voltage has to be calculated.

Concept Introduction:

Refer to part (a).