Vapour Pressure Explained in 5 Minutes Class 12 Guide

Vapour Pressure as a concept is one that just about everyone has to come to terms with while studying chemistry for their various board and competitive exams. It lays the foundation of many concepts like boiling point, volatility, and Raoult's Law. Let's ace this in 5 minutes!

Meaning of Vapour Pressure?
Vapour Pressure is the pressure exerted by vapour particles above a liquid surface in a closed container at equilibrium.Thus, it indicates the ease with which a liquid turns into gas.

The higher the vapour pressure, the more volatile a liquid is.

Key Points
1. Increases with Temperature: As temperature increases, more particles escape into the vapour phase, thereby raising the vapour pressure.
2. Depends on the Nature of the Liquid: Weak intermolecular forces = high vapour pressure (say, alcohol, ether).
3. Used in Real Life: Evaporation of perfume, pressure-cookers, weather forecasts.
4. Important for Class XII boards and JEE/NEET questions.

Mastering Vapour Pressure strengthens your grip over thermodynamics and equilibrium. It’s not just theory it explains real-world phenomena and prepares you for advanced topics. Learn fast, revise smart, and stay ahead with Major Kalshi Classes.

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