Class 11 Chemistry — Chapter 6: EQUILIBRIUM

Chapter 6: EQUILIBRIUM is a chapter in Class 11 Chemistry (Part 1), part of the CBSE NCERT curriculum followed by over 25 million students across India. This chapter covers 6 topics including The Concept of Dynamic Equilibrium, Equilibrium in Physical Processes, Solid-Liquid Equilibrium. BrainWeave provides free AI-powered explanations — by voice or text, in Hindi or English — with no signup required.

Get Instant Solutions from AI Tutor → Read Chapter Summary

What you'll learn

▸The Concept of Dynamic EquilibriumCore concept

dynamic equilibriumforward reactionreverse reactionequilibrium stateequilibrium mixture
▸Equilibrium in Physical ProcessesCore concept

phase transformationphysical equilibriumclosed systemphase changeopposing processes
▸Solid-Liquid Equilibrium

melting pointfreezing pointice-water systemphase equilibriumfusion
▸Liquid-Vapour Equilibrium and Vapour PressureCore concept

vapour pressureevaporationcondensationboiling pointclosed vessel
▸Solid-Vapour Equilibrium

sublimationdepositionsolid iodinevapour phaseconstant intensity
▸General Characteristics of EquilibriumCore concept

dynamic natureclosed systemconstant propertiesreversibleequal rates

Chapter Summary

Understand that equilibrium is not a static state, but a dynamic one where forward and reverse processes occur at equal rates, resulting in no observable change in the system's macroscopic properties.

Recognize and describe the characteristics of equilibrium in physical phase transformations, including solid-liquid, liquid-vapor, and solid-vapor systems, and understand the specific conditions under which they occur.

Explain the dynamic equilibrium established between a solid and its liquid phase at the substance's normal melting (or freezing) point, where the rate of melting equals the rate of freezing.

Understand how equilibrium is established between a liquid and its vapour in a closed container, leading to a constant pressure known as the equilibrium vapour pressure at a given temperature.

Describe the equilibrium that occurs when a solid sublimes in a closed container, where the rate of sublimation becomes equal to the rate of deposition of the vapour back to the solid state.

Summarize the key features common to all systems at equilibrium, such as being dynamic in nature, requiring a closed system for attainment, and having constant measurable properties like pressure and concentration.

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

Explain dynamic equilibrium simply. Get Solution →
Give real-world equilibrium examples. Get Solution →
Describe different states of matter. Get Solution →
What term describes the state when the rate of a forward process is equal to the rate of the reverse process? Get Solution →
In the representation H₂O(l) ⇌ H₂O(vap), what do the double half arrows (⇌) indicate? Get Solution →
What is a mixture of reactants and products in the equilibrium state called? Get Solution →
At atmospheric pressure, the temperature at which a pure substance's solid and liquid phases are in equilibrium is known as its... Get Solution →
Which of the following is given in the text as an example of a substance that undergoes solid-vapour equilibrium? Get Solution →

Did you know?

💡 Dry ice skips the liquid phase, directly changing from solid to gas.
💡 Water is unique, naturally existing as a solid, liquid, and gas on Earth.
💡 Some animals, like chameleons, change color to balance their body temperature.
💡 The universe strives for a perfect energy equilibrium, though it expands constantly.
💡 Stars are made of plasma, the fourth state of matter, superheated gas.

Frequently Asked Questions

How many topics are covered in this chapter?

This chapter covers 6 key topics: The Concept of Dynamic Equilibrium, Equilibrium in Physical Processes, Solid-Liquid Equilibrium, Liquid-Vapour Equilibrium and Vapour Pressure, Solid-Vapour Equilibrium, and more. The BrainWeave AI tutor explains each one with examples.

Is Chapter 6: EQUILIBRIUM important for board exams?

Class 11 is a foundation year. Mastering this chapter now will help you build strong fundamentals for the higher classes.

Can I get NCERT solutions for this chapter in Hindi?

Yes. BrainWeave's AI tutor supports Hindi, English, and Hinglish for both voice and text chat. Just ask your question in your preferred language.

Is BrainWeave free for Class 11 - Science?

Yes. BrainWeave's free Spark plan gives generous daily messages — enough for regular homework. Premium features unlock when you bring your own free Google Gemini API key.

Can I use voice chat for this chapter?

Absolutely. Tap the mic, ask any question about Chapter 6: EQUILIBRIUM, and the AI tutor will explain it back in voice and text.

How is BrainWeave better than static NCERT solutions sites?

Static solution sites give the same answer to everyone. BrainWeave adapts to your question — ask "explain like I'm 12" or "give a real-world example" and get a personalized response. Voice mode and Hindi support work seamlessly.

Related Chapters

Chapter 5: THERMODYNAMICS

Chapter 2: STRUCTURE OF ATOM

Chapter 1: SOME BASIC CONCEPTS OF CHEMISTRY

Chapter 4: CHEMICAL BONDING AND MOLECULAR STRUCTURE

Chapter 3: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

Ask Any Question About Chapter 6: EQUILIBRIUM

Voice or text. Hindi or English. Free to start. No signup required.

Start Now →