Question

$1$kg of a saturated solution contains $200$g of solute at a given temperature. Calculate its solubility of the solute at that temperature.

• A. $20$
• B. $25$
• C. $50$
• D. $10$

Answer 1

The correct option is B

$25$

Explanation of correct option:

Amount of solute in saturated solution = $200$g

Amount of solution = $1000$g

Therefore, the amount of solvent = $1000-200=800$g.

Now, the solubility of the solute = $\frac{\mathrm{Amount}\mathrm{of}\mathrm{solute}\mathrm{in}\mathrm{saturated}\mathrm{solution}}{\mathrm{Amount}\mathrm{of}\mathrm{solvent}\mathrm{in}\mathrm{saturated}\mathrm{solution}}\times 100=\frac{200}{800}\times 100=25$.

Therefore, the solubility of the solute is 25.

Hence, the correct option is (B).