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Voltaic cells produce a positive overall cell potential. What does this indicate?

William Cain

in Chemistry

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Eric Morgan on July 19, 2018

A positive overall cell potential indicates that the reaction will be spontaneous. There is a connection between the Gibbs free energy change (ΔG) and the total potential:ΔG = -nFEwhere: n - the number of changed electrons, F - Faraday constant, E - the total potential.In order for a process to be spontaneous, the Gibbs free energy change must be negative, and the above relationship indicates that the total potential has to be positive (because the number of electrons and the Faraday constant having a positive value).


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