Question

An iron nail is dipped in the solution of copper sulphate about about 30 minute state the change in colour observed give the reaction for the change

Answer 1

When Iron nail (Ferrum) is dipped in Copper sulphate (CuSO4) there takes reaction between them and coppersulphate change its color from blue to light green. This shows Iron is more reactive than Copper, it can replace Copper from CuSO4.

Answer 2

its blue colour will start changing in greenish colour and there will be a brownish yellow coating on iron nail.

Fe + CuSO4 = FeSO4 + Cu