Question

How can a supersaturated solution be prepared from a saturated solution formed at room temperature?

• A. By adding more solvent to the solution at the room temperature.
• B. By adding more solute to the solution at the room temperature.
• C. By adding more solute to the solution at higher temperatures.
• D. By increasing the temperature of the solution.

Answer 1

The correct option is C

By adding more solute to the solution at higher temperatures.

A saturated solution cannot dissolve anymore of the solute at the given temperature.
But if we heat the given solution, it will start dissolving more solute.
Once we cool it down to the original temperature, the excess solute dissolved will precipitate or crystallize out. As this happens, heat is given off.