Question

If you keep an iron piece in solid state CuSo4 crystals,does it get any reaction?Guess the reason

Answer 1

Fe(s) + CuSO4(aq) => FeSO4(aq) + Cu(s)

Yes, a reaction would occur. Iron is higher in the reactivity series than copper as iron loses electrons more readily than copper. Hence, iron will displace copper from CuSO4 to form FeSO4 and copper.