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JEE Main201910 Jan 2019Evening ShiftChemistryRedox ReactionsActual

In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecule of CO 2 is:

Options

  1. A2
  2. B10
  3. C1
  4. D5

Correct answer

C. 1

Step-by-step solution

2   MnO 4 - + 5 C 2 O 4 2 - + 16 H + → 10   CO 2 + 2   Mn 2 + + 8 H 2 O C goes from + 3 oxidation state to + 4 oxidation state. Total 10   e - are transferred for 10 molecules of CO 2 . Hence, for 1 molecule of CO 2 , only one e - is transferred. So, number of electrons involved for 1 molecule of CO 2 is 1 .

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