Class 11 Chemistry Chapter 6 Equilibrium – Revision Notes

Quick revision notes for Class 11 Chemistry Chapter 6 (Equilibrium). These Class 11 Chemistry Chapter 6 notes are ideal for quick revision just before exams.

Equilibrium Basics

• Dynamic equilibrium: forward rate=reverse rate.
• K_c=[products]/[reactants] (each raised to stoichiometric coefficient).

Le Chatelier’s Principle

• Equilibrium shifts to counteract imposed change (concentration, pressure, temperature).

Acids, Bases, pH

• Arrhenius, Brønsted-Lowry, Lewis definitions.
• pH=−log[H⁺]; K_w=10⁻¹⁴ at 25°C.

Buffers

• Resist pH change; weak acid/base + conjugate; common ion effect.

One-Line Summary

Equilibrium describes the dynamic balance between forward and reverse reactions, governed by the equilibrium constant and Le Chatelier’s principle, extending to acid-base and buffer systems in solution.

Written by Satish

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