GKFix MCQ Question

What is the correct balanced reduction half-reaction for Cr₂O₇²⁻ in acidic medium?

• A. Cr₂O₇²⁻(aq) + 14H⁺(aq) → 2Cr³⁺(aq) + 7H₂O(l)
• B. Cr₂O₇²⁻(aq) + 6e⁻ → 2Cr³⁺(aq) + 7H₂O(l)
• C. Cr₂O₇²⁻(aq) + 14H⁺(aq) + 6e⁻ → 2Cr³⁺(aq) + 7H₂O(l)
• D. Cr₂O₇²⁻(aq) + 7H₂O(l) → 2Cr³⁺(aq) + 14H⁺(aq) + 6e⁻