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COMEDK2022ChemistryRedox Reactions

KMnO ₄ acts as an oxidising agent in acidic medium. The number of moles of KMnO ₄ that will be required to react with one mole of oxalate ions (to form CO ₂ ) in acidic solution is

Options

  1. A2 5
  2. B5 2
  3. C5
  4. D5 4

Correct answer

A. 2 5

Step-by-step solution

The balanced chemical equation for the reaction between permanganate ions and oxalate ions in an acidic medium is given by: 2 MnO ₄⁻ + 5 C ₂ O ₄²⁻ + 16 H ⁺ 2 Mn ²⁺ + 10 CO ₂ + 8 H ₂ O From the stoichiometry of the balanced equation, 2 moles of MnO ₄⁻ react with 5 moles of C ₂ O ₄²⁻ . Therefore, the number of moles of MnO ₄⁻ required to react with 1 mole of C ₂ O ₄²⁻ is 2 5 moles. Answer: 2 5

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