Question

Why we add dilute sulphuric acid in crystallization of cuso4

Answer 1

Answer:

Explanation:

To get a white powder and remove the blue colour of copper.

Thanks.

Answer 2

The sulphuric acid will dissolve any residual copper metal or any copper oxides that exist as impurities in the copper sulphate, converting those impurities into copper sulphate.

Reactions are :

• H₂SO₄ + Cu → CuSO₄ + H₂

• H₂SO₄ + CuO → CuSO₄ + H₂O

• H₂SO₄ + Cu₂O → 2CuSO₄ + H₂O + H₂