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What is the relation between Gibbs free energy and the EMF of the cell?

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in Chemistry – Class 11 by (148k points)
What is the relation between Gibbs free energy and the EMF of the cell?

(a) ΔG = -nFEcell

(b) G = -nFEcell

(c) ΔG = -nEcell

(d) ΔG = -nFcell

I had been asked this question in an international level competition.

Query is from Gibbs Energy Change and Equilibrium in chapter Thermodynamics of Chemistry – Class 11

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Correct answer is (a) ΔG = -nFEcell

Easy explanation: The relation between Gibbs free energy and EMF of the cell is ΔG = -nFEcell, where G is the caps free energy and as a number of electrons lost or gained while f depicts Faraday and E cell stand for standard electrode potential.

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