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Which of the following half-reactions is correctly balanced? MnO 4 - → Mn 2+ + 4H 2 O Cu + 2Ag + → 2Ag + Cu 2+ H 2 + OH - → 2H 2 O Pb 2+ + 2e - → Pb

Which of the following half-reactions is correctly balanced?
  1. MnO4- → Mn2+ + 4H2O
  2. Cu + 2Ag+ → 2Ag + Cu2+
  3. H2 + OH- → 2H2O
  4. Pb2+ + 2e- → Pb

Grade:12

2 Answers

Arun
25750 Points
5 years ago
Dear Shefali
 
  1. Cu + 2Ag+ → 2Ag + Cu2+ is correctly balanced.
 
hence option 2 is correct
 
Regards
Arun
Shivangi Khatter
askIITians Faculty 468 Points
5 years ago
dear student
the correct answer is(D)
The charge in option (D) is balanced on both the sides.

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