Question

Why does iron nail become brownies in colour and the blue colour of cooper sulphate solutions fades

Answer 1

Answer:

Bcoz iron is more reactive than copper therfore the colour of copper sulphate changes.

Answer 2

Answer:

Displacement reaction takes place,

here's the equation:

Fe + Cu(SO)4 = Fe(SO)4 + Cu

Iron is more reactive then Copper!!