In this case, we have:
Fe(s) -> Fe^2+(aq) + 2e^-
Fe^3+(aq) + e^- -> Fe^2+(aq)
Now, we need to find the standard reduction potentials (E°) for each half-reaction. Let's assume you have a table of standard reduction potentials. You should find:
E°(Fe^2+/Fe) =
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