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99 Percentile Qs Bank for JEE MainChemistryd and f Block Elements

Potassium permanganate acts as an oxidant in neutral, alkaline as well as acidic media. The final products obtained from it in the three conditions are, respectively

Options

  1. AM n O 4 2 - , M n 3 + and M n 2 +
  2. BM n O 2 , M n O 2 and M n 2 +
  3. CM n O 2 , M n O 2 + and M n 2 +
  4. DMnO, MnO 2 and M n 2 +

Correct answer

B. M n O 2 , M n O 2 and M n 2 +

Step-by-step solution

In neutral and alkaline medium M n O 4 - + 2 H 2 O + 3 e - → M n O 2 + 4 O H - In acidic medium M n O 4 - + 8 H + + 5 e - → M n 2 + + 4 H 2 O

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