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In order to prepare one litre 1 N solution of KMnO ₄ , how many grams of KMnO ₄ are required, if the solution to be used in acid medium for oxidation?

Options

  1. A128 g
  2. B41.75 g
  3. C31.60 g
  4. D62.34 g

Correct answer

C. 31.60 g

Step-by-step solution

In acidic medium, aligned & MnO ₄⁻+8 H ⁺+5 e⁻ Mn ²⁺+4 H ₂ O & (From KMnO ₄ ) aligned Hence, equivalent weight of KMnO ₄ in acidic medium = Moleculer weight 5 = 158 5 =31.6 1 ~N solution can be prepared by dissolving 31.6 g KMnO ₄ in 1L solution.

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