how does solubility of a substance vary the temperature of solutions
Answers
The solubility of a given solute in a given solvent typically depends on temperature. Many salts show a large increase in solubility with temperature. Some solutes exhibit solubility that is fairly independent of temperature.
Theoretical Perspective
As the temperature of a solution is increased, the average kinetic energy of the molecules that make up the solution also increases. This increase in kinetic energy allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
The average kinetic energy of the solute molecules also increases with temperature, and it destabilizes the solid state. The increased vibration (kinetic energy) of the solute molecules causes them to be less able to hold together, and thus they dissolve more readily.
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For liquid liquid solution as Temperature increases then solubility product increases and hence solubility also increases (endothermic process) but this is not always true.
for eg.-Solubility of gases in liquid(Cold drink) decreases as temperature increase as this involves an exothermic process.