If dissolution of a gas in a liquid is exothermic, what happens to solubility on increasing temperature?
Answer and explanation
Correct answer: Decreases
In an exothermic dissolution, heat is produced when gas enters the liquid. Increasing temperature adds heat to the system, so equilibrium tends to shift in the reverse direction, releasing gas from solution and lowering its solubility. The amount of decrease is not necessarily exactly known, so “doubles” and “infinite” are unjustified. This trend is also common for gases in liquids.
Frequently asked questions
What is the correct answer to this question?
Decreases
Why is this the correct answer?
In an exothermic dissolution, heat is produced when gas enters the liquid. Increasing temperature adds heat to the system, so equilibrium tends to shift in the reverse direction, releasing gas from solution and lowering its solubility. The amount of decrease is not necessarily exactly known, so “doubles” and “infinite” are unjustified. This trend is also common for gases in liquids.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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