Question

v. Blue vitriol is heated​

Answer 1

Answer:

When CuSO4. 5H2O ( Hydrated copper sulphate) , contains 5 molecules of water of crystallisation. 5H2O ) is heated, it loses its water of crystallisation and becomes anhydrous salts (without water of crystallisation)

Explanation:

Answer 2

Answer:

Blue vitriol is blue in colour as it contains 5 molecules of water of crystallisation (CuSO4. H2O). When it is heated, it losses water of crystallisation and becomes anhydrous (CuSO4) which is grey-white in colour.