Practice question
Question
How many electrons are involved in the reduction of 1 mole of Cr₂O₇²⁻ to Cr³⁺ in acidic medium?
Explanation
Cr₂O₇²⁻ + 14H⁺ + 6e⁻ → 2Cr³⁺ + 7H₂O . 6 electrons per mole.
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