For the unbalanced redox reaction Cr₂O₇²⁻(aq) + NO₂⁻(aq) → Cr³⁺(aq) + NO₃⁻(aq), what are the oxidation numbers of Cr in Cr₂O₇²⁻ and of N in NO₂⁻?
Lagos State University CHM101 2024 past question
- +12 and +3
- +6 and +3
- +6 and −3
- +7 and +5
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