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If E^(o)""(Fe^(+2)//Fe) is x(1),E^(o)""(...

If `E^(o)""_(Fe^(+2)//Fe)` is `x_(1),E^(o)""_(Fe ^(+3)//Fe)`is `x_(2),` then `E^(o) ""_(Fe^(+3)//Fe^(2+))` will be :

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Verified by Experts

The correct Answer is:
`3x_(2)-2x_(1)`
`FetoFe^(2+)+2e^(-),-x`, (i). `" "triangleG_(1)^(@)=-(-2Fx_(1))`
`Fe^(3+)+3e^(-)toFe,x_(2)` …(ii). `" "triangleG_(2)^(@)=-3Fx_(2)`
`Fe^(3+)+e^(-)toFe^(2+)` ….(ii). `" "triangleG_(3)^(@)=-FE^(@)`
Equation (iii) `=eq`. `(1)+eq.(ii)`
`E_(Fe^(3+)//Fe^(2+))^(@)=3x_(2)-2x_(1)`
`-FE^(@)=-(-2Fx_(1))+-3Fx_(2)`
`E_(Fe^(3+)//Fe^(2+))^(@)=3x_(2)-2x_(1)`
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