MnO-4 + 8H+ + ne → Mn++ + 4H2O. Which is the value of n in the reaction above?

  • A 2
  • B 3
  • C 4
  • D 5
jamb 1991chemistry

The correct answer is D. 5

MnO-4 + 8H+ + ne- → Mn++ + 4H2O

Since Mn has 7 electrons on one side and 2 electrons on the other side. The value of ne- is 5.

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