Chemistry · JEE

Equilibrium Concepts for JEE

189+ syllabus-aligned questions available

Quick answer

Master Equilibrium by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Equilibrium before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Concept overview for Equilibrium covering 7 JEE syllabus subtopics including Meaning of equilibrium, the concept of dynamic equilibrium, Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes, Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium.

Key points

Understand the definition and scope of Meaning of equilibrium, the concept of dynamic equilibrium in the JEE syllabus
Memorise key formulas and standard results linked to Meaning of equilibrium, the concept of dynamic equilibrium
Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
Understand the definition and scope of Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes in the JEE syllabus
Memorise key formulas and standard results linked to Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes
Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

Revise Meaning of equilibrium, the concept of dynamic equilibrium with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to Meaning of equilibrium, the concept of dynamic equilibrium and reattempt after 48 hours
Revise Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes and reattempt after 48 hours

Common trap

Students often rush Meaning of equilibrium, the concept of dynamic equilibrium questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

JEE Formula Sheet

6+ important formulas for Equilibrium

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Subtopics in Equilibrium

View Equilibrium formula sheet — 6+ JEE formulas

Free sample questions

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Q1ChemistryUnit 6: Equilibrium

The reaction of the acid and the produces carbon dioxide, which causes dough and batters to rise.

Q2ChemistryUnit 6: Equilibrium

If the pressure of

N_{2} / H_{2}

mixture in a closed apparatus is 100 atm and

20 \%

of the mixture reacts then the pressure at the same temperature would be:

Q3ChemistryUnit 6: Equilibrium

A catalyst is a substance which:

Q4ChemistryUnit 6: Equilibrium

100ml of a solution of HCl with pH value 3 is diluted with

400 \mathrm{ml}

of water. The new pH of the solution is?

Q5ChemistryUnit 6: Equilibrium

For the gas phase exothermic reaction,

A_{2}+B_{2} \rightleftharpoons C_{2}

carried out in a closed vessel, the equilibrium moles of

A_{2}

can be increased by: This question has multiple correct options

Q6ChemistryUnit 6: Equilibrium

The statement that is not correct is :

Q7ChemistryUnit 6: Equilibrium

In a mixture of acetic acid and sodium acetate, the ratio of concentrations of the salt to the acid is increased ten times. Then the

p H

of the solution:

Q8ChemistryUnit 6: Equilibrium

Addition of phosphates and nitrates/fertilizers into water leads to

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Frequently asked questions

What concepts in Equilibrium are essential for JEE?

Focus on core ideas across Meaning of equilibrium, the concept of dynamic equilibrium, Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes, Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium, Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle, and more. JEE tests application, not just memorisation.