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Balance the equation by ion electron met...

Balance the equation by ion electron method
`MnO_(4)^(-) + Br^(-) to Mn^(2+) + Br_(2)` (acidic medium)

Text Solution

Verified by Experts

`overset(+7)(MnO_(4)^(-))+5e^(-)+8H^(+) rarr Mn^(2+)+4H_(2)O" ......(1)]" times 2`
`2Br^(-) rarr overset(0)(Br_(2))+2e^(-)" ......(2)]" times 5`
`2MnO_(4)^(-)+10e^(-)+16H^(+) rarr 2Mn^(2+)+8H_(2)O`
`" "10Br^(-) rarr 5Br_(2)+10e^(-)`
`bar(2MnO_(4)^(-)+10Br^(-)+16H^(+) rarr 2Mn^(2+)+5Br_(2)+8H_(2)O)`
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