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What is the standard reducing potential ...

What is the standard reducing potential `(E^(@))` for `Fe^(3+)to Fe`?
(Given that `Fe^(2+)+2e^(-)rightarrowFe,` `E_(Fe^(2+)//Fe^(@)) =-0.47V`
`Fe^(3+) + e^(-)to Fe^(2+)`, `E_(Fe^(3+)//Fe^(2+))^(@)= +0.77V`

A

`-0.057V`

B

`+0.30V`

C

`-0.30V`

D

`+0.057V`

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The correct Answer is:
A
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