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Question

Solubility of a gas in water decreases with increase in ____.

A
pressure
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B
volume
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C
concentration
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D
temperature
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Solution

The correct option is D temperature
As the temperature of a liquid increases, the solubilities of gases in that liquid decrease. We can use the Second Law of Thermodynamics to explain why.

Heating a solution of a gas enables the particles of gas to move more freely between the solution and the gas phase. The Second Law predicts that they will shift to the more disordered, more highly dispersed, and therefore, more probably gas state.

Hence, correct answer is 1.

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