Question

Q:what change do you expect when a student put a clean iron nail into a solution of sulphate
answer:​

Answer 1

Explanation:

What changes do you expect ? When an iron nail is immersed in the solution of CuSO4 then that iron nail displaces Cu from the solution of CuSO4 as iron is more reactive than Cu respectively! Therefore, CuSO4 solution colour changes from blue to pale green [or simply green]