Practice question
Question
How many coulombs are required to reduce 1 mole of MnO₄⁻ to Mn²⁺ in acidic medium? (Faraday constant = 96500 C/mol)
Explanation
MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O . Charge = 5 × 96500 = 482500 C .
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