A solution contains `Fe^(3+), Fe^(2+) and I^(-)` ions. This solution was treated with iodine at `35^(@)C`.
`E_(Fe^(3+)|Fe^(2+))^(@)=+0.77V and E_(I_(2)|2I^(-))^(@)=+-.536V`. The favourable redox reaction is -

Options

A. `I_(2)` will be reduced to `I^(-)`
B. there will be bo redox reaction
C. `I^(-)` will be oxidised to `I_(2)`
D. `Fe^(2+)` will be oxidised to `Fe^(3+)`

Answer

C

Explanation

The standard reduction potential of `Fe^(3+)|Fe^(2+)` system is higher than that of `I_(2)|I^(-)` system. Thus `Fe^(3+)` gets reduced and `I^(-)` gets oxidised.