Which principle helps explain the effect of temperature on solubility of a gas in a liquid?
Answer and explanation
Correct answer: Heat effect and equilibrium principle
The dissolution of many gases in liquids is exothermic, meaning heat is released when gas molecules become solvated. By the equilibrium principle, increasing temperature tends to favour the reverse process, in which gas escapes from the liquid, so solubility generally decreases. The exact behaviour depends on the system, but colour mixing, metallic lustre and mass conservation of colour do not explain this temperature effect.
Frequently asked questions
What is the correct answer to this question?
Heat effect and equilibrium principle
Why is this the correct answer?
The dissolution of many gases in liquids is exothermic, meaning heat is released when gas molecules become solvated. By the equilibrium principle, increasing temperature tends to favour the reverse process, in which gas escapes from the liquid, so solubility generally decreases. The exact behaviour depends on the system, but colour mixing, metallic lustre and mass conservation of colour do not explain this temperature effect.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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