How can a saturated solution of copper sulphate be made to dissolve more of copper sulphate?

Correct option is C

The correct answer is By heating the solution.
• The solubility of a substance is the maximum amount of that substance that can dissolve in a given amount of solvent at a given temperature. The solubility of copper sulphate in water increases with temperature. This means that more copper sulphate can dissolve in water at higher temperatures than at lower temperatures.
• When a saturated solution of copper sulphate is heated, the solubility of the copper sulphate increases. This is because the heat provides energy to the copper sulphate molecules, allowing them to move around more freely and interact more easily with the water molecules. As a result, more copper sulphate can dissolve in the solution.
• If you heat a saturated solution of copper sulphate to a high enough temperature, all of the copper sulphate will dissolve. This is called a super-saturated solution. A supe-saturated solution is unstable, and if you cool it slowly, the excess copper sulphate will precipitate out.
• So, to dissolve more copper sulphate in a saturated solution of copper sulphate, you can heat the solution. This will increase the solubility of the copper sulphate.