Question

When a nail is dipped in copper sulphate solution, the colour of the solution is changed and the nail is
covered with a brown layer Why? Explain this reaction in terms of chemical change ​

Answer 1

Answer:

Explanation:

when iron nail is dipped in copper sulphate solution it's color changes as iron is more reactive than copper hence it displaces copper from it's salt solution i.e.  from copper sulphate and hence change in color is seen and brown coating on nail is COPPER

$CuSO_{4} + Fe ------> FeSO_{4} +Cu$