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The auto catalyst in the redox reaction involving acidified potassium permanganate and oxalic acid is

Options

  1. AMn ²⁺
  2. BSO ₄²⁻
  3. CCO ₂
  4. DH ₂ O

Correct answer

A. Mn ²⁺

Step-by-step solution

5 C ₂ O ₄ ²⁻+2 MnO ₄ ⁻+16 H ⁺ (Coloured) Mn ²⁺+8 H ₂ O +10 CO ₂ (Colourless) Formation of Mn ²⁺ ions, which is indicated by the decrease in the intensity of the colour of the solution, the rate of the reaction increases which was slow initially.

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