How is the vapour pressure of a liquid with weak intermolecular attraction?
Answer and explanation
Correct answer: Higher
Intermolecular attractions hold molecules inside a liquid. If these attractions are relatively weak, molecules need less energy to escape from the surface. At the same temperature, more molecules enter the vapour phase and the equilibrium vapour pressure is higher. Hence weak attraction is associated with greater volatility, not zero pressure.
Frequently asked questions
What is the correct answer to this question?
Higher
Why is this the correct answer?
Intermolecular attractions hold molecules inside a liquid. If these attractions are relatively weak, molecules need less energy to escape from the surface. At the same temperature, more molecules enter the vapour phase and the equilibrium vapour pressure is higher. Hence weak attraction is associated with greater volatility, not zero pressure.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Equilibrium. Topic: Equilibrium in physical and chemical processes.
