The reactions taking place in a fuel cell in a given mixture of CeO 2 and Gd 2 O 3 and having Carbon monoxide as a fuel is given. The cell potential for this fuel at the given temperature conditions is to be calculated. Concept introduction: Gibbs free energy is basically the maximum amount of non-expansion work done. Therefore, it is represented as, W max = Δ G ° The maximum amount of work that is done by an electrochemical cell is given as, W max = n F E ° cell The relationship between Gibbs free energy change and equilibrium constant is given by the formula, Δ G ° = − n F E ° cell To determine: The cell potential for the given fuel cell at the given temperature conditions

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Chapter 18, Problem 125AE

Interpretation Introduction

Interpretation:

The reactions taking place in a fuel cell in a given mixture of CeO2 and Gd2O3 and having Carbon monoxide as a fuel is given. The cell potential for this fuel at the given temperature conditions is to be calculated.

Concept introduction:

Gibbs free energy is basically the maximum amount of non-expansion work done. Therefore, it is represented as,

Wmax=ΔG°

The maximum amount of work that is done by an electrochemical cell is given as,

Wmax=nFE°cell

The relationship between Gibbs free energy change and equilibrium constant is given by the formula,

ΔG°=−nFE°cell

To determine: The cell potential for the given fuel cell at the given temperature conditions

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