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

More negative the `E^(@)` value of species, more stronger is the reducing agent.Since, `E_(Cr^(3+)//Cr)^(@)=-0.74V` (most negative among the given given example ),Cr is the strongest reducing agent.