Which of the following reactions will not occur ? Why not?

(a) MgSO4 (aq) + Cu (s) → CuSO4 (aq) + Mg (s)


(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)


(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)

(a) MgSO4 (aq) + Cu (s) CuSO4 (aq) + Mg (s), will not occur. Because copper is less reactive then Mg.


(c) MgSO4 (aq) + Fe (s FeSO4 (aq) + Mg (s), will also not occur. Because Fe is less reactive then Mg. (in both case more reactive metal is being displaced by a less reactive metal, which is not possible).


96