Question:
Why do gases always tend to be less soluble in liquids as the temperature is raised?
Solution:
Solubility of gases in liquids decreases with an increase in temperature. This is because dissolution of gases in liquids is an exothermic process.
Gas $+$ Liquid $\longrightarrow$ Solution $+$ Heat
Therefore, when the temperature is increased, heat is supplied and the equilibrium shifts backwards, thereby decreasing the solubility of gases.
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