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Question: Answered & Verified by Expert
In which of the following reactions H2O2 acts as a reducing agent ?

(a)   H 2 O 2 + 2 H + + 2 e - → 2 H 2 O

(b)   H 2 O 2 - 2 e - → O 2 + 2 H +

(c)   H 2 O 2 + 2 e - → 2 OH -

(d)   H 2 O 2 + 2 OH - - 2 e - → O 2 + 2 H 2 O
ChemistryHydrogenJEE MainJEE Main 2014 (06 Apr)
Options:
  • A (a) , (b)
  • B (c) , (d)
  • C (a) , (c)
  • D (b) , (d)
Solution:
2356 Upvotes Verified Answer
The correct answer is: (b) , (d)
Reducing agent undergoes oxidation and in oxidation half reaction there will be loss of electrons.


(b)   H 2 O 2 → O 2 + 2 H + + 2 e - (loss)

(d)   H 2 O 2 + OH - → 2 H 2 O + O 2 + 2 e - (loss)

 

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