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NEETChemistryd and f Block Elements

How is potassium permanganate prepared commercially?

Options

  1. ABy fusion of MnO 2 with an alkali metal hydroxide and an oxidising agent
  2. BBy electrolytic oxidation of manganate (Vl)
  3. CBy oxidizing a manganese (II) ion salt with peroxodisulphate
  4. DBy heating potassium manganate (K 2 MnO 4 )

Correct answer

A. By fusion of MnO 2 with an alkali metal hydroxide and an oxidising agent

Step-by-step solution

By fusion of MnO 2 with an alkali metal hydroxide and an oxidising agent like KNO 3 . This produces the dark green K 2 MnO 4 which disproportionates in a neutral or acidic solution to give permanganate

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