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Question
The following is a partial redox equation:
MnO4+8H++xeMn2++4H2O
The value of the coefficient 'x' is:
Options:
A .  5
B .  3
C .  1
D .  0
Answer: Option A
:
A
When you account for the change in the oxidation number of Manganese on either side:
MnO4+8H++5eMn2++4H2O
x = 5.

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