Given the standard potential of the following at `25^(@)C`. `MnO_(2) rarr Mn^(3+), " "lE^(c-)=0.95V` `Mn^(3+) rarr Mn^(2+)," "E^(c-)=1.51V` The standard potential of `MnO_(2)rarr Mn^(2+)` isA. `-0.56V`B. `-2.46V`C. `-1.23V`D. `1.23V`

Given the standard potential of the following at `25^(@)C`. `MnO_(2) r

1.	Given the standard potential of the following at `25^(@)C`. `MnO_(2) rarr Mn^(3+), " "lE^(c-)=0.95V` `Mn^(3+) rarr Mn^(2+)," "E^(c-)=1.51V` The standard potential of `MnO_(2)rarr Mn^(2+)` isA. `-0.56V`B. `-2.46V`C. `-1.23V`D. `1.23V`
Answer» Correct Answer - d `2e^(-) +MnO_(2) rarr Mn^(2+), E^(c-) =?` `Delta G =-2FE^(c-)` `i. e^(-)+MnO_(2) rarr Mn^(3+), DeltaG_(1)^(c-)=-Fe^(c-)=-0.95F` `ii. e^(-) +Mn^(3+) rarr Mn^(3+), DeltaG_(2)^(c-)=-FE^(c-)=-1.51E^(c-)` Equations `(i) +(ii)` give the desired equation. `:. -2FE^(-) =(-0.95-1.51)F` `E^(c-)1.23V`

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Given the standard potential of the following at `25^(@)C`. `MnO_(2) rarr Mn^(3+), " "lE^(c-)=0.95V` `Mn^(3+) rarr Mn^(2+)," "E^(c-)=1.51V` The standard potential of `MnO_(2)rarr Mn^(2+)` isA. `-0.56V`B. `-2.46V`C. `-1.23V`D. `1.23V`

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