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MnO-4 + 8H+ + ne → Mn

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

A.

2

B.

3

C.

4

D.

5

View answer & explanation

Correct answer is D

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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