An iron wire is immersed in a solutin containg `ZnSO_(4) and NiSO_(4)`. Predict giving reason which of the following reactions is likely to proceed ?
(i) Iron reduces `Zn^(2+)` ions (ii) Iron reduces `Ni^(2+)` ions. Given : `E_(Zn^(2+)//Zn)^(@) = - 0.76 " volt", E_(Fe^(2+)//Fe)^(@) = - 0.44` volt and `E_(Ni^(2+)//Ni)^(@) = - 0.25` volt

Answer

Iron reduces `Ni^(2+)` ions as the `E_("cell")^(@)` in this case has positive value