Which of the following represents the preparation of KMnO 4 from pyrolusite ore?

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Reduction of MnO₂with carbon Oxidation of MnO₂with KOH and O₂ Correct Electrolysis of MnSO₄ Heating MnO₂with HCl

In the first step, MnO 2 is oxidized with KOH in the presence of O 2 to form K 2 MnO 4 : 2MnO 2 + 4KOH + O 2 → 2K 2 MnO 4 + 2H 2 O

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