Question

whats the change in colour of iron nails and copper sulphate solution if iron nail is dipped in CuSO4 solution ?

Answer 1

the solution will change to green in color I think!!!!

Answer 2

Here's ur answer ,

When iron nails are dipped in Copper sulphate solution after sometime we see a shiny coating on the iron nails the coating is of reddish brown copper . The colour of copper sulphate fades gradually.
In this more reactive iron displaces copper from copper sulphate solution.

The displacement reaction

Fe + CuSO4 --> FeSO4 +Cu

Hope it helps you!