Question

How does the increase in temperature pf the solvent affect the solubility of solids and gases?

• A. Increases for solids and decreases for gases
• B. Increases for both solids and liquids
• C. Decreases for both solids and liquids
• D. Decreases for solids and increases for gases

Answer 1

The correct option is A Increases for solids and decreases for gases

For many solids that are dissolved in a solvent, the solubility increases with rise in temperature. With increase in kinetic energy, the solvent molecules effectively break apart the solute molecules that are held together by strong intermolecular forces of attraction, thereby increasing the solubility.

On the other hand, the higher kinetic energy causes more motion in the gas molecules which breaks the intermolecular forces of attraction and escape from the solution. Therefore, as the temperature of the solvent increases, the solubility of a gas in it decreases.