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COMEDK2023Evening ShiftChemistryd and f Block ElementsActual

In neutral medium KMnO ₄ oxidises MnSO ₄ to _________

Options

  1. AMn ₂ O ₃
  2. BMn ₃ O ₄
  3. CK ₂ MnO ₄
  4. DMnO ₂

Correct answer

D. MnO ₂

Step-by-step solution

In a neutral or weakly alkaline medium, potassium permanganate ( KMnO ₄ ) acts as an oxidizing agent and is reduced to manganese dioxide ( MnO ₂ ). The chemical reaction between KMnO ₄ and MnSO ₄ in a neutral medium is given by: 2 KMnO ₄ + 3 MnSO ₄ + 2 H ₂ O 5 MnO ₂ + K ₂ SO ₄ + 2 H ₂ SO ₄ In this reaction, the manganese ion Mn ²⁺ from MnSO ₄ is oxidized to MnO ₂ (where the oxidation state of Mn is +4), and the permanganate ion MnO ₄^- is reduced to MnO ₂ . Thus, the product formed is MnO ₂ . Answer: MnO ₂

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