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AIIMS2014Chemistryd and f Block Elements

KMnO ₄ in alkaline medium changes to

Options

  1. AMn ³⁺
  2. BMnO ₂
  3. CMnO ₄²⁻
  4. DMn ( OH )₄⁻

Correct answer

B. MnO ₂

Step-by-step solution

In alkaline solution, KMnO ₄ is first reduced to manganate and then to insoluble manganese dioxide. aligned & 2 KMnO ₄+ H ₂ O alkaline 2 MnO ₂+2 KOH &+3[ O ] aligned

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