Question

Why does the colour of copper sulphate crystals spread easily in water

Answer 1

In the glass of cold water, copper sulphate settles at the bottom but in the glass of hot water it slowly spreads. The copper sulphate crystals can be seen dissolving in the glass of hot water as the water just above the crystals will become blue in colour.

Answer 2

To dissolve more copper sulfate than this critical amount of salt, you will need to heat the water or add morewater to the beaker. ... Stir the mixture of water and salts using a glass rod until all the crystals have dissolved to form a saturated copper sulfatesolution.