Predict whether reaction will occur between the pairs given below :
`Ag and Fe^(3+)`
`[" Given "E_(Fe^(3+)|Fe^(2+))=+0.77 V , E_((1/2)I_(2)|I^(-))=+0.54 V, E_(Ag^(+)|Ag)^(@)=+0.79 V and E_((Sn)^(4+)|Sn^(2+))^(@)=+0.15 V ] `

Explanation

We know (i) a redox couple with higher standard reduction potential `(E^(@))` is a stronger oxidising agent than the one of with a lower `(E^(@))` , Conversely a redox couple with a lower `E^(@)` is a stronger reducing agent than the one with a higher `E^(@)` is a stronger oxidising and reducing agents react spomtaneously to form weaker oxidising and reducing agents .
Since `E_(Ag^(+)|Ag)^(@)gtE_(Fe^(3+)|Fe^(2+))^(@),Fe^(3+)` is a weaker oxidising agent than `Ag^(+)` amd Ag is a weaker reducing agent than `Fe^(2+)` . So , Ag will not be able to reduce - `Fe^(3+)` . Hence the reaction between Ag and `Fe^(3+)` is not possible