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General Chemistry

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Moderate

Concept: Effect of Temperature on Gas Solubility in Water

CHEM-EOMD7T

The solubility of ${O}_{2}$ in water is observed to decrease with increasing temperature when pressure is held constant.

Which of the following statements supports this observation?

A

The process of ${O}_{2}$ dissolving in water is exothermic.

B

Higher kinetic energy causes more motion in ${O}_{2}$ molecules, causing intermolecular bonds to be broken and allowing ${O}_{2}$ to escape from solution.

C

Intermolecular attractions between ${O}_{2}$ molecules and the surrounding solvent molecules lower the energy of the solution, and heat is released.

D

All of the above statements support this observation.