Vapour Pressure | Class 11 Chemistry | Chapter 5 | New Book Important Long for Board Exam

In this lecture, we will study Vapour Pressure, which is the pressure exerted by vapors in equilibrium with their pure liquid state at a given temperature. We will understand the concept of dynamic equilibrium between evaporation and condensation. We will also learn the factors affecting vapour pressure, including: 1. Intermolecular Forces (IMF): Stronger IMF → lower vapour pressure. 2. Temperature: Higher temperature → higher vapour pressure. 3. Nature of Liquid: • Liquids with low boiling point → high vapour pressure. • Liquids with high boiling point → low vapour pressure. Examples of vapour pressures at 20°C: • Isopentane → 580 torr • Chloroform → 170 torr • Mercury → 0.012 torr This topic is crucial for board exams and provides a deep understanding of how liquids and vapors interact under equilibrium conditions. #VapourPressure #Class11Chemistry #Chapter5 #LiquidsAndSolids #ChemistryLecture #DynamicEquilibrium #IntermolecularForces #BoilingPoint #BoardExamPreparation #chemistryconcepts