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Find the formula in the process ... I don't know how to find the standard electromotive force ... college physical chemistry. ...
△G= △H-T△S

Firstly, the Gibbs free energy change of standard molar reaction is obtained.

- 127.07×2 - 298×(-22 1.5× 10^-3)=- 188. 133

△G=-nFE

n=2 F=96500

E=0.97478