Question

The solubility of solids in liquids usually increases with an increase in temperature and decreases with a drop in temperature.
1. Decreases, Increases
2. Increases, Decreases
3. Increases, Increases
4. Decreases, Decreases

Answer 1

Correct Answer - Option 2 : Increases, Decreases

The solubility of solids in liquids usually increases with an increase in temperature and decreases with a drop in temperature.

• The concept of solubility is the cumulative volume of solute that can dissolve in a given quantity of solvent or a quantity of solution at a specified temperature or pressure (in the case of gaseous solutes).
• If the heat generated in the dissolving reaction is less than the heat needed to split the solid apart, the net dissolving reaction is endothermic.
• The application of more heat enables the dissolving of reactions by supplying energy to break bonds in the solid.
• It is the most frequent case where an rise in temperature causes an increase in the solubility of solids.
• If the heat produced during the dissolving process is greater than the heat required to break the solid apart, the net dissolving reaction is exothermic.