GKFix MCQ Question

Which of the following can oxidize Fe²⁺ to Fe³⁺?

• A. Zn2+ + 2e– → Zn(s) –0.76
• B. Fe2+ + 2e– → Fe(s) –0.44
• C. MnO4– + 8H+ + 5e– → Mn2+ + 4H2O 1.51
• D. Cu2+ + 2e– → Cu(s) 0.34