Chapter 5, Problem 5.63P

(a)

Interpretation Introduction

Interpretation:

From the given information which cell acts as cathode has to be identified.

Concept Introduction:

Gibbs free energy of a cell:

The Gibbs free energy of a cell is given by below equation,

  $\Delta G=-nF{E}_{Cell}^{\circ }$

Where,

  $\begin{array}{l}\Delta G-Gibbsfreeenergy\\ n-numberofelectron\\ F-\text{faraday constant}\\ E^{°}-cell\text{potential}\end{array}$

(b)

Interpretation Introduction

Interpretation:

The cell potential of the given fuel cell has to be calculated.

Concept Introduction:

Nernst equation:

  $E_{cell}orEMF=E^{\Theta }-\frac{0.0591}{n}\log Q$