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If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as__________________?

ASolubility increases as temperature increases
Solubility increases as temperature decreases
CSolubility is independent of temperature
DSolubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Correct Answer: B. Solubility increases as temperature decreases

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