Use the electrode potentials tabulated below.

What is the ∆G°_rxn at 25°C for the following reaction?
Cu²⁺(aq)  + Fe(s) → Fe³⁺(aq) + Cu(s)

• A. –7.3×10² kJ
• B. 7.3×10² kJ
• C. –2.2×10² kJ
• D. 2.2×10² kJ

Answer: (C)