In the context of temperature and solubility, which statement is accurate for gases?

Study for the CFE Physical Science Honors Test. Explore diverse questions, flashcards, and detailed explanations to ace your exam effectively and boost your confidence.

The statement that solubility decreases with temperature for gases is accurate because, in general, as temperature rises, the kinetic energy of gas molecules increases. This increased energy allows gas molecules to escape more easily from the solvent into the atmosphere, leading to a decrease in the solubility of gases in liquids. This is in contrast to most solids, where higher temperatures typically result in increased solubility.

For example, carbonated beverages maintain higher levels of dissolved CO2 at cooler temperatures. When the drink warms up, the gas escapes more readily from the liquid, which is why it's carbonated drinks often go flat if they are warm.

Understanding the behavior of gases with temperature helps explain phenomena like the inability to keep soft drinks fizzy at room temperature, showcasing how temperature impacts gas solubility directly.

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