NCERT Book Class 11 Chemistry Chapter 6 Equilibrium PDF

Download the Class 11 Chemistry Chapter 6 Equilibrium NCERT Book PDF, the official 2026-27 NCERT textbook chapter. It covers physical and chemical equilibrium and ionic equilibrium, one of the highest-weight chapters in the Boards, JEE Main, JEE Advanced and NEET.

• Official NCERT 2026-27 chapter, clean and print-ready.
• Covers equilibrium constant, Le Chatelier's principle, pH, buffers and K_sp.
• Read it alongside the solved exercises and the formula sheet linked below.

This Class 11 Chemistry Chapter 6 Equilibrium NCERT Book PDF is the official 2026-27 NCERT text, checked page by page against the latest edition.

What Class 11 Chemistry Chapter 6 Equilibrium Covers

The chapter starts with physical and chemical equilibrium and the equilibrium constant, then moves through Le Chatelier's principle into ionic equilibrium, pH, buffers and solubility products. The official NCERT sections are listed below.

Key Concepts You Will Study

Students should read the chapter with a pen and note each rule as it appears. This chapter carries a heavy share of marks, so the definitions must be exact.

• The equilibrium constant K_c and K_p, and the relation between them.
• Le Chatelier's principle and the effect of concentration, pressure and temperature.
• Arrhenius, Bronsted-Lowry and Lewis concepts of acids and bases.
• pH, ionization constants and the common ion effect.
• Buffer solutions and the solubility product K_sp of sparingly soluble salts.

Why Download the NCERT Book PDF for This Chapter

The NCERT textbook is the single most important source for the CBSE exam, and most JEE and NEET questions from this chapter are built directly on its solved examples.

• Every Board question on K_c, pH and K_sp comes from this text or its exercises.
• The solved examples show the correct way to set up an ICE table.
• Reading offline from the PDF avoids missing any small rule of ionic equilibrium.

How to Use the NCERT Book PDF for Equilibrium

Read the chapter once fully, then work through it a second time with the exercises open. A short, ordered plan keeps physical and ionic equilibrium from blurring together.

• Read each section, then write its rule in your own words in a single line.
• Solve the in-text examples before looking at the given solution.
• Attempt the back exercises, then check them against the NCERT Solutions below.
• Revise the pH, buffer and K_sp formulae the night before the exam.

Other Class 11 Chemistry Equilibrium Resources

Pair the textbook PDF with the solved answers, revision notes and formula sheet for the same chapter.

FAQs on Class 11 Chemistry Chapter 6 NCERT Book PDF