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Which of the following formula is used to calculate the Gibbs free energy of an electrochemical reaction?

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Which of the following formula is used to calculate the Gibbs free energy of an electrochemical reaction?

(a) ΔG=-nFE^0cell

(b) ΔG=+nFE^0cell

(c) ΔG=-nFEcell

(d) ΔG=+nFEcell

I got this question in class test.

Asked question is from Modern Theory Principles in section Modern Theory Principles of Corrosion Engineering

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Right option is (c) ΔG=-nFEcell

The explanation: ΔG=-nFEcell where n is the electrons participated in the reaction, F is the faraday constant (96500 coulombs), Ecell is the overall cell potential and E^0cell is the standard cell potential.

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