Question

what do you observe when iron bails are added to Cooper sulphate solution

Answer 1

Iron displaces copper from the sulphate solution leading to formation of ferrous sulphate and copper.

CuSO4 + Fe ----> FeSO4 + Cu

The blue colour of the solution changes to pale green and there is a reddish-brown deposit of copper.

This is a displacement reaction in which a more reactive metal displaces a less reactive metal from its salt solution

Hope it helps you my dear friend..