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JEE Main202226 Jul 2022Evening ShiftChemistryd and f Block ElementsActual

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

Options

  1. AMn 4 + , H 2 O only
  2. BMn 2 + , H 2 O only
  3. CMn 4 + , H 2 O , O 2 only
  4. DMn 2 + , H 2 O , O 2 only

Correct answer

D. Mn 2 + , H 2 O , O 2 only

Step-by-step solution

Hydrogen peroxide acts as an oxidising as well as reducing agent in both acidic and alkaline media. In this reaction MnO 4 - act as an oxidising agent and hydrogen peroxide acts as a reducing agent. The reaction is shown below, 2 MnO 4 - + 6 H + + 5 H 2 O 2 → 2 Mn 2 + + 5 O 2 + 8 H 2 O

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