A sealed vessel holds air and liquid water. Which of the following conditions would greatly increase the amount of air dissolved into the water?

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Correct Answer: C. Adding argon to the vessel.
The correct answer is C. Temperature change does increase the solvation ability of gas into liquid, but not significantly. However, we can easily recognize that a warm soda loses air much faster than a cold soda. Thus, it seems that answer B could be correct. However, in a sealed vessel, the factor that will increase the amount of air dissolved most immediately is the increase of pressure. The pressure is increased when another gas in forced in the system, like argon. The increase pressure will drive the equilibrium to force more air into the water.
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