Skip to main content
Chapter 6ChemistryCBSE Class 11

Equilibrium

Equilibrium is Chapter 6 of NCERT Class 11 Chemistry. The chapter covers Equilibrium in Physical Processes, Equilibrium in Chemical Processes – Dynamic Equilibrium, Law of Chemical Equilibrium and Equilibrium Constant, Homogeneous Equilibria, and more. Use this public guide to revise the official topic structure before asking Lerno for step-by-step help.

13 topicsChapter 6 of 9
Study with AI

Topics covered

13 sections
01

Equilibrium in Physical Processes

IntroductionSolid-Liquid EquilibriumLiquid-Vapour EquilibriumSolid-Vapour EquilibriumEquilibrium Involving Dissolution of Solid or Gases in LiquidsGeneral Characteristics of Equilibria Involving Physical Processes
02

Equilibrium in Chemical Processes – Dynamic Equilibrium

Introduction
03

Law of Chemical Equilibrium and Equilibrium Constant

Introduction
04

Homogeneous Equilibria

IntroductionEquilibrium Constant in Gaseous Systems
05

Heterogeneous Equilibria

Introduction
06

Applications of Equilibrium Constants

IntroductionMagnitude of Equilibrium ConstantPredicting the Direction of the ReactionCalculating Equilibrium Concentrations
07

Relationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy G

Introduction
08

Factors Affecting Equilibria

IntroductionEffect of Concentration ChangeEffect of Pressure ChangeEffect of Inert Gas AdditionEffect of Temperature ChangeEffect of a Catalyst
09

Ionic Equilibrium in Solution

Introduction
10

Acids, Bases and Salts

IntroductionArrhenius Concept of Acids and BasesThe Brönsted-Lowry Acids and BasesLewis Acids and Bases
11

Ionization of Acids and Bases

IntroductionThe Ionization Constant of WaterThe pH ScaleIonization Constants of Weak AcidsIonization of Weak BasesRelation between Ka and KbDi- and Polybasic Acids and Di- and Polyacidic BasesFactors Affecting Acid StrengthCommon Ion Effect in the Ionization of Acids and BasesHydrolysis of Salts and the pH of their Solutions
12

Buffer Solutions

IntroductionDesigning Buffer Solution
13

Solubility Equilibria of Sparingly Soluble Salts

IntroductionSolubility Product ConstantCommon Ion Effect on Solubility of Ionic Salts

Key concepts

Equilibrium in Physical ProcessesEquilibrium in Chemical Processes – Dynamic EquilibriumLaw of Chemical Equilibrium and Equilibrium ConstantHomogeneous EquilibriaHeterogeneous EquilibriaApplications of Equilibrium ConstantsRelationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy GFactors Affecting EquilibriaIntroductionSolid-Liquid Equilibrium

Practice questions

Frequently asked

What is covered in Equilibrium?

Equilibrium is Chapter 6 in NCERT Class 11 Chemistry. The verified chapter structure includes Equilibrium in Physical Processes, Equilibrium in Chemical Processes – Dynamic Equilibrium, Law of Chemical Equilibrium and Equilibrium Constant, Homogeneous Equilibria, Heterogeneous Equilibria.

How should I revise Equilibrium?

Revise the chapter topic by topic: start with Equilibrium in Physical Processes, Equilibrium in Chemical Processes – Dynamic Equilibrium, Law of Chemical Equilibrium and Equilibrium Constant, then practice questions that mix definitions, examples, and application steps.

Can I use Lerno for Class 11 Chemistry questions?

Yes. Lerno is built for CBSE students and uses NCERT-grounded context so students can ask for explanations, practice prompts, and step-by-step guidance for this chapter.

Study prompts

1

Explain Equilibrium in Physical Processes from Equilibrium and give one NCERT-style example or practice step.

2

Explain Equilibrium in Chemical Processes – Dynamic Equilibrium from Equilibrium and give one NCERT-style example or practice step.

3

Explain Law of Chemical Equilibrium and Equilibrium Constant from Equilibrium and give one NCERT-style example or practice step.

4

Explain Homogeneous Equilibria from Equilibrium and give one NCERT-style example or practice step.

5

Explain Heterogeneous Equilibria from Equilibrium and give one NCERT-style example or practice step.

6

Explain Applications of Equilibrium Constants from Equilibrium and give one NCERT-style example or practice step.

Explore this chapter

Practice QuestionsChapter-wise NCERT-aligned questionsSolutions GuideStep-by-step approach per topicChapter ExplanationTopic map for structured revision

AI Tutor · Free

Study “Equilibrium” with Lerno

Get instant explanations, solved examples, and NCERT-aligned practice — grounded in your textbook, not generic AI answers.

Open Lerno — it's free