Question

why does the sulphate solution change when an iron nail is dipped in it​

Answer 1

Answer:

When an iron nail is placed in a copper sulphate solution, iron displaces copper from copper sulphate solution forming iron sulphate, which is green in colour.Therefore, the blue colour of copper sulphate solution fades and green colour appears.Heres the equation

• CuSO4 +Fe _____> FeSO4 +Cu

Hope this helps you ........!!

Cheers

Answer 2

Answer:

because the oxygen of the sulphate combines with iron thus changing the colour