Which change is most suitable to increase vapour pressure?
Answer and explanation
Correct answer: Increase temperature
Increasing temperature raises molecular kinetic energy and allows more liquid molecules to escape into the vapour phase, so vapour pressure increases. Adding a non-volatile solute or decreasing solvent mole fraction generally lowers the solvent's vapour pressure according to Raoult's law. The vague phrase 'make concentrated' does not provide a valid increase mechanism here.
Frequently asked questions
What is the correct answer to this question?
Increase temperature
Why is this the correct answer?
Increasing temperature raises molecular kinetic energy and allows more liquid molecules to escape into the vapour phase, so vapour pressure increases. Adding a non-volatile solute or decreasing solvent mole fraction generally lowers the solvent's vapour pressure according to Raoult's law. The vague phrase 'make concentrated' does not provide a valid increase mechanism here.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Equilibrium. Topic: Equilibrium in physical and chemical processes.
