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`

Options

A. (+0.057V)
B. (+0.30V)
C. (-0.30V)
D. (-0.057V)

Explanation

To find the standard reducing potential \( E^\circ \) for the reduction of \( \text{Fe}^{3+} \) to \( \text{Fe} \), we can use the given half-reactions and their standard reduction potentials.

### Step 1: Write down the half-reactions and their standard potentials
1. The first half-reaction is:
\[ \text{Fe}^{2+} + 2e^- \rightarrow \text{Fe} \quad E^\circ = -0.47 \, \text{V} \]
2. The second half-reaction is:
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