why do gases always tend to be less soluble in liquids as the temperature is raised?
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As the temperature is increased , the kinetic energy of the gases increase (the increase in temperature increases the kinetic energy of the gas through heat energy). As a result the randomness or entropy of the gas increases and it's solubility decreases i.e, it shows more desire to be free rather than being soluble in any liquid.
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The dissolution of a gas in a liquid is exothermic process. therefore, in accordance with Le-Chatelier's principle, with increase in temperature, the equilibrium shifts in the backward direction.
liquid + gas= dissolved gas. ∆H =-ve
therefore,the soulubility of a gas in solution decreases with rise in temperature.
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