GKFix MCQ Question

Which of the following can reduce Cu²⁺ to Cu?

• A. Ag+ + e– → Ag(s) 0.80
• B. Cu+ + e– → Cu(s) 0.52
• C. Pb2+ + 2e– → Pb(s) –0.13
• D. Zn2+ + 2e– → Zn(s) –0.76