Question

Why do gases always tend to be less soluble in liquids as the temperature is raised?

Answer 1

Solubility of gases in liquids decreases with an increase in temperature. This is because dissolution of gases in liquids is an exothermic process. Therefore, when thetemperature is increased, heat is supplied and the equilibrium shifts backwards, thereby decreasing the solubility of gases.

Answer 2

Hey !!

                     Gas + Liquid ⇄ Dissolved gas ; ΔH = -ve

Dissolution of gas in liquid is an exothermic process. As the temperature is increased, according to LeChatelier's principle the equilibrium will shift backward. This results in decrease of solubility of gases in liquid.

Hope it helps you !!