The standard redox potentials for the ractions `Mn^(2+)+2e^(-)toMn` and `Mn^(3+)+e^(-)toMn^(2+)` are -1.18V and 1.51 V respectively. What is the redox potential for the reaction `Mn^(3+)+3e^(-)toMn`A. 0.33VB. 1.69VC. `-0.28`VD. `-0.85V`

The standard redox potentials for the ractions `Mn^(2+)+2e^(-)toMn` an

1.	The standard redox potentials for the ractions `Mn^(2+)+2e^(-)toMn` and `Mn^(3+)+e^(-)toMn^(2+)` are -1.18V and 1.51 V respectively. What is the redox potential for the reaction `Mn^(3+)+3e^(-)toMn`A. 0.33VB. 1.69VC. `-0.28`VD. `-0.85V`
Answer» Correct Answer - C `Mn^(2+)+2e^(-)toMn` . . . .(i) `DeltaG^(o)=-nFE^(o)=2.36F` `Mn^(3+)+e^(-)toMn^(2+)` . . .(ii) `DeltaG^(o)=-nFE^(o)=-1.51F` Add eqns. (i) and (ii), `Mn^(3+)+3e^(-)toMn` `Delta^(0)=2.36F+(-1.51F)=0.85F` `DeltaG^(0)=-nFE^(o)` `0.85F=-3xxFxxE^(@)impliesE^(@)=-0.28V`

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The standard redox potentials for the ractions `Mn^(2+)+2e^(-)toMn` and `Mn^(3+)+e^(-)toMn^(2+)` are -1.18V and 1.51 V respectively. What is the redox potential for the reaction `Mn^(3+)+3e^(-)toMn`A. 0.33VB. 1.69VC. `-0.28`VD. `-0.85V`

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