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Vapour Pressure of Solutions of Solids in Liquids Video Lecture | Chemistry Class 12 - NEET

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FAQs on Vapour Pressure of Solutions of Solids in Liquids Video Lecture - Chemistry Class 12 - NEET

1. What is vapour pressure?
Ans. Vapour pressure refers to the pressure exerted by the vapour molecules when a substance is in equilibrium between its liquid and gaseous state at a particular temperature.
2. How does the vapour pressure of a solution change with the addition of a solid solute?
Ans. The vapour pressure of a solution decreases with the addition of a solid solute. This is because the solute particles occupy space on the surface of the liquid, reducing the number of solvent molecules that can escape into the gas phase, thereby lowering the vapour pressure.
3. What is the relationship between temperature and vapour pressure of a solution?
Ans. The vapour pressure of a solution increases with an increase in temperature. This is due to the fact that at higher temperatures, more solvent molecules have sufficient energy to escape into the gas phase, leading to an increase in vapour pressure.
4. How does the nature of the solute affect the vapour pressure of a solution?
Ans. The nature of the solute can have an impact on the vapour pressure of a solution. Generally, non-volatile solutes (solute with low vapour pressure) will have a smaller effect on the vapour pressure of the solution compared to volatile solutes (solute with high vapour pressure).
5. How can the vapour pressure of a solution be measured experimentally?
Ans. The vapour pressure of a solution can be determined using various techniques, such as the static method or the dynamic method. In the static method, the pressure of the vapour phase above the solution is measured when the system reaches equilibrium. In the dynamic method, the rate of evaporation of the solvent is measured under controlled conditions.
150 videos|378 docs|213 tests
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