Question

which of the following reaction is feasible? Give reasons. Fe + H2SO4 = FeSO4 + Ag = Cu + H2SO4 + CuSO4 + Mg

Answer 1

1) Fe + CuSO4 = FeSO4 + Cu Here iron displaces copper form its solution. Therfore Iron is more reactive than copper bcoz only more reactive metals can displace the less reactive metal from its solution. so, Fe > Cu (i) 2) Zn + FeSO4 = ZnSO4 + Fe Here, Zinc displaces iron from its solution. Hence, Zinc is more reactive than iron. Zn > Fe (ii) From (i) and (ii) Zn > Fe > Cu !!