Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solutions

Question:

Solubility of a gas in a liquid:

Options:

Decreases with rise in temperature

Increases with rise in temperature

Does not depend on temperature

First decreases and then increases with rise in the temperature

Correct Answer:

Decreases with rise in temperature

Explanation:

The correct answer is Option (1) → Decreases with rise in temperature

Solubility of gases in liquids decreases with rise in temperature. When dissolved, the gas molecules are present in liquid phase and the process of dissolution can be considered similar to condensation and heat is evolved in this process. According to Le Chatelier’s Principle As dissolution is an exothermic process, the solubility should decrease with increase of temperature (backward reaction).