Question

How does the solubility change with temperature changes?

Answer 1

Hint Solution is a homogeneous mixture of two or more solutes in a solvent. In short we can say that a solution is made up of solute and solvent where solute is that substance which gets dissolved and solvent in which it gets dissolved and both make a solution.

Complete solution:
> Solubility can be defined as the maximum amount of solute that can dissolve in a known quantity of solvent at a certain temperature. It is not necessary that solute is of liquid nature; it can exist in any state of matter, i.e. it can be solid, liquid or gas. There are many factors which affect the solubility of solution. As solubility of substance is dependent upon the physical and chemical properties of that substance. Solubility generally depends on the temperature, pressure and forces between the particles.
> Solubility of a solution can also be changed by changing the temperature. By changing temperature we can increase the solubility of a solute. We know that water dissolves solutes at or. Whereas sparingly soluble solid or liquid substances can be dissolved completely by increasing the temperature to some higher range. But in the case of gaseous substance temperature inversely acting on the solubility factor i.e. as the temperature increases gases expand and escape from their solvent.

Hence, we can say that increasing the temperature increases the solubility of solids and liquids, whereas in case of gases increase in temperature decreases the solubility of any substance.

Note: Solubility effect can also be explained on the principle known by the name Le Chatelier's Principle which states that forward reaction is favored when the concentration of the reactants is increased and addition of products increase the backward reaction.