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NCERT Solutions for Class 11 Chemistry Chapter 5 - States of Matter: Gases and Liquid

This chapter deals with the three states of matter and intermolecular interactions. The chapter also deals with types of bonding, melting and boiling points, the role of gas laws in elucidating the concept of the molecule. The Boyle's law, Charles law, Gay Lussac's law, Avogadro's law, ideal behavior, and the gas equation's empirical derivation are all discussed in detail. The Avogadro's number, ideal gas equation, Deviation from ideal behavior, liquefaction of gases, critical temperature, kinetic energy and molecular speeds, Liquid State-vapour pressure, viscosity and surface tension are also covered in the chapter.

  • Intermolecular Forces

This topic provides an understanding of the attraction and repulsion between interacting particles. It deals with Dispersion forces, Dipole forces, Induced Dipole forces and hydrogen bonds.

  • Thermal Energy

Students learn the basic idea of thermal energy which is the energy of a body arising from the motion of its atoms or molecules is thermal energy.

  • The Gaseous State

This topic demonstrates the various elements in the periodic table that exist in the gaseous state.

  • The Gas Laws

In this section, students will learn the result of research carried on for several centuries on gases' physical properties. The various laws covered in this section are Boyle's Law (Pressure-Volume Relationship), Charles' Law (Temperature - Volume Relationship), Gay Lussac's Law (Pressure-Temperature Relationship) and Avogadro Law (Volume - Amount Relationship).

  • Ideal Gas Equation

A gas that follows Boyle's law, Charles' law and Avogadro law strictly are called an ideal gas. The three laws, combined in a single equation, are known as the ideal gas equation.

  • Kinetic Energy and Molecular Speeds

This topic is concerned with understanding and calculating the speed of molecules

  • Kinetic Molecular Theory of Gases

The theory that attempts to elucidate the behaviour of gases is known as kinetic molecular theory.

  • Liquidation of Gases

This topic discusses the pressure and temperature required for the conversion of gases into liquids.

 

 

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