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Balance the following equation in acid m...

Balance the following equation in acid medium by Ion-electron method :
`Fe_("(aq)")^(+2) + Cr_(2) O_(7 "(aq)")^(2-) to Fe_("(aq") ^(3+)j + Cr_("(aq))^(+3)`

Text Solution

Verified by Experts

Oxidation half cell :
`Fe_((aq))^(2+)toFe_((aq))^(3+)`
`Fe_((aq))^(2+)toFe_((aq))^(3+)+e^(-)`
`6Fe_((aq))^(2+)to6Fe^(3+)+6e^(-)` ______(1)
Reduction half cell :
`Cr_(2)O_(7)^(2-)._((aq)) to Cr_((aq))^(3+)`
`Cr_(2)O_(7)^(2-)._((aq)) to 2Cr_((aq))^(3+)`
`Cr_(2)O_(7)^(2-)._((aq))+14 H_((aq))^(+) to 2Cr_((aq))^(3+) +7H_(2)O(l)`
`Cr_(2)O_(7)^(2-)._((aq)) + 14 H^(+)._((aq))+6e^(-) to 2Cr_((aq))^(3+)+7H_(2)O(l)` ______(2)
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