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JEE Main2012ChemistryRedox ReactionsActual

In the following balanced reaction, values of X, Y and Z respectively are

Options

  1. A2,5,16
  2. B8,2,5
  3. C5,2,16
  4. D5,8,4

Correct answer

A. 2,5,16

Step-by-step solution

X MnO ₄⁻+Y C ₂ O ₄⁻+Z H ⁺ X Mn ⁺⁺+2 Y CO ₂+ Z 2 H ₂ O First half reaction MnO ₄⁻ Mn ⁺⁺ On balancing MnO ₄⁻+8 H ⁺+5 e ⁻ Mn ⁺⁺+4 H ₂ O Second half reaction C ₂ O ₄⁻ 2 CO ₂ On balancing C ₂ O ₄⁻ 2 CO ₂+2 e ⁻ On multiplying eqn. (ii) by 5 and (iv) by 2 and then adding we get aligned & 2 MnO ₄⁻+5 C ₂ O ₄⁻⁻+16 H ⁺ & 2 Mn ⁺⁺+10 CO ₂+8 H ₂ O aligned

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