What Reaction Occurs at the Anode During the Electrolysis of Aqueous

Multiple Choice

What reaction occurs at the anode during the electrolysis of aqueous CuSO₄?
Reduction Half-Reaction
E° (V)
2H₂O(l) + 2e^- H₂(g) + 2OH^-(aq) -0.83
2H⁺(aq) + 2e^- H₂(g) 0.00
Cu²⁺(aq) + 2e^- Cu(s) 0.34
O₂(g) + 4H⁺(aq) + 4e^- 2H₂O(l) 1.23

A) 2H₂O(l) → O₂(g) + 4H⁺(aq) + 4e^-
B) Cu(s) → Cu²⁺(aq) + 2e^-
C) 2H₂O(l) + 2e^- → H₂(g) + 2OH^-(aq)
D) Cu²⁺(aq) + 2e^- → Cu(s)
E) 2H⁺(aq) + 2e^- → H₂(g)