Question

How does solubility affect temperature?

Answer 1

Solubility is defined as the ability of the substances to dissolve in another substance. These substances can be solid, liquid or gas. For example- salt dissolves in water, sugar dissolves in milk. There are many factors on which solubility depends- temperature, pressure and gases as solvent.

Complete step-by-step answer:
At a certain temperature, when a solute dissolves into a solvent it is known as solubility. Solubility product is defined as the maximum product of the molar concentration of ions that are produced due to the dissociation of the compound. The solubility product is constant at a given temperature.

For gases substances, when solubility is decreased we will see an increase in the temperature. This is because when most gases dissolve in the solution, it results in an exothermic process. That means when the gas is dissolved in the solution, heat is released.

If we increase the temperature, we can increase the solubility of the solute. Water dissolves solute at ${{20}^{{}^\circ }}C$ or ${{100}^{{}^\circ }}C$ . We can liquefy the sparingly soluble solid or liquid by increasing the temperature.

As we increase the temperature, the kinetic energy of the particles increases which helps the molecule to break into smaller particles and make them readily soluble.

Note: Le chatlier’s also explained about the solubility process. If a stress is applied to an equilibrium, the system adjusts itself and minimizes the stress. If solubility is increased with increase in temperature, that process is endothermic. If solubility decreases with increase in temperature, that process is exothermic.