Question

If you keep
an iron piece in solid state copper sulphate crystals does it get any reaction

Answer 1

No, there will not be any reaction.

In solid state, Cu(2+) ions and SO4(2-) ions are attached to each other. They are not free.
So there will be no reaction.


However, in aqueous solution, the ions are free. Since Fe is more reactive, Fe can replace the Cu(2+) ions. Fe will convert to Fe(2+) ions and Cu(2+) ions will become Cu and precipitate.

Answer 2

no, solid iron pieces will not react to copper sulphate crystals as the displacement reaction involves ions which can only be formed in aqueous stata