The standard Gibbs energy change for the following voltaic cell is ΔG° = -89.3 kJ at 25°C. What is E°cell? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s)

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The standard Gibbs energy change is related to the standard cell potential by the equation ΔG° = -nFE°cell. For this cell, n = 2 (because two electrons are transferred in the cell reaction), so E°cell = -ΔG°/2F = -(-89.3 kJ)/(2 × 96.485 kJ/V) = +0.463 V.

The Standard Gibbs Energy Change for the Following Voltaic Cell