Why is dissolving of a gas in a liquid greater at lower temperature?
Answer and explanation
Correct answer: At lower temperature gas particles escape less easily
Lowering temperature reduces the average kinetic energy of particles. Dissolved gas molecules then have less tendency to overcome the attractions holding them in the liquid and escape into the gas phase. Consequently, gas solubility usually increases on cooling, although the exact change depends on the gas and solvent. The other options describe no valid physical explanation.
Frequently asked questions
What is the correct answer to this question?
At lower temperature gas particles escape less easily
Why is this the correct answer?
Lowering temperature reduces the average kinetic energy of particles. Dissolved gas molecules then have less tendency to overcome the attractions holding them in the liquid and escape into the gas phase. Consequently, gas solubility usually increases on cooling, although the exact change depends on the gas and solvent. The other options describe no valid physical explanation.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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