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What is the standard free energy of the Ni/Zn cell (in kJ) if the standard voltage...

What is the standard free energy of the Ni/Zn cell (in kJ) if the standard voltage is .51

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Answer #1

Zn(s) ----------------> Zn^2+ (aq) + 2e^-     E0 = 0.76v

Ni^2+ (aq) + 2e^- -----------> Ni(s)            E0 = -0.25v

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Zn(s) + Ni^2+ (aq) -------------> Zn^2+ (aq) + Ni(s)   E0 cell = 0.51v

n = 2

G0    = -nE0cell *F

            = -2*0.51*96500

            = -98430J     = -98.43KJ >>>>>answer

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