Why does the solubility of a gas decrease with increase in temper… - Vidyadip

Question

Why does the solubility of a gas decrease with increase in temperature ?
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How does solubility of a gas in water varies with temperature ?

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Answer

The gases are soluble in water and other liquids.
According to Charles’ law, the volume of a given mass of a gas increases with the increase in temperature at constant pressure.
Hence, the volume of the dissolved gas increases with the increase in temperature.
This enormous increase in volume of the gases cannot be accommodated by the solvent molecules, hence excess of the gases escape out in the form of bubbles.

Therefore, the solubility of gases in liquids decreases with temperature.

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