What generally happens to the solubility of gases in liquids when temperature increases?
Answer and explanation
Correct answer: Decreases
The dissolution of most gases in liquids is exothermic. When temperature rises, the added thermal energy favours gas molecules escaping from the liquid rather than remaining dissolved, so equilibrium solubility generally decreases. The decrease is not necessarily exactly a factor of two, and gas solubility still depends on pressure; it does not become pressure-independent.
Frequently asked questions
What is the correct answer to this question?
Decreases
Why is this the correct answer?
The dissolution of most gases in liquids is exothermic. When temperature rises, the added thermal energy favours gas molecules escaping from the liquid rather than remaining dissolved, so equilibrium solubility generally decreases. The decrease is not necessarily exactly a factor of two, and gas solubility still depends on pressure; it does not become pressure-independent.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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