Question

How would you prepare a saturated solution of sodium chloride in water at ${30}^{\mathrm{o}}\mathrm{C}$. What will happen if this solution is cooled at ${10}^{\mathrm{o}}\mathrm{C}$?

Answer 1

Saturated solution:

A solution in which no more solute can be dissolved at a given temperature is known as a saturated solution.

Preparation of saturated solution:

Step 1: Take $100\mathrm{gm}$ of distilled water.

Step 2: Add $1\mathrm{gm}$ of $\mathrm{NaCl}$ or common salt.

Step 3: Keep stirring and adding the solute until no more solute dissolves in it.

On cooling at ${10}^{\mathrm{o}}\mathrm{C}$:

When the solution is cooled at ${10}^{\mathrm{o}}\mathrm{C}$, some of its dissolved solutes will get separated in the form of crystals.