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REDOX REACTIONS AND ELECTROCHEMISTRY
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Question
What is the reduction half-reaction for Cr₂O₇²⁻ in acidic solution?
A. Cr₂O₇²⁻ + 14H⁺ → 2Cr³⁺ + 7H₂O
B. Cr₂O₇²⁻ + 6e⁻ → 2Cr³⁺ + 7H₂O
C. Cr₂O₇²⁻ + 14H⁺ + 6e⁻ → 2Cr³⁺ + 7H₂O
D. Cr₂O₇²⁻ + 7H₂O → 2Cr³⁺ + 14H⁺ + 6e⁻
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