Question

Blue colour of the copper sulphate crystals disappear on heating why

Answer 1

Answer:

when copper sulphate is heated for some time, the blue colour disappears and it becomes white-gray in colour. This is because the water molecules are lost on heating and copper sulphate pentahydrate is converted to anhydrous copper sulphate.

Explanation:

Answer 2

Blue crystals change to white anhydrous powdery form...