Question

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?​

Answer 1

Answer:

Iron lies above in the reactivity series and thus more reactive than copper. As a result, the more reactive metal (iron) displaces a less reactive metal (copper) from its salt solution (copper sulphate solution). Hence, the change in color.

Answer 2

Answer:

Iron lies above in the reactivity series and thus more reactive than copper. As a result, the more reactive metal (iron) displaces a less reactive metal (copper) from its salt solution (copper sulphate solution). Hence, the change in color , I didn't give the answer on time