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Chemical Equilibrium

Telangana Open School (TOSS) · Class 12 · Chemistry

Quick revision notes for Chemical Equilibrium — Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

49 questions28 flashcards4 concepts

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Key Topics to Revise

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1. Static and Dynamic Equilibrium

  • Static equilibrium occurs when no movement or reaction takes place, e.g., a book lying on a table.
  • Dynamic equilibrium occurs when forward and reverse processes happen at equal rates, resulting in no net change, e.g., liquid-vapour equilibrium.
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2. Reversible and Irreversible Reactions

  • Reversible reactions proceed in both directions and are denoted by ⇌.
  • Irreversible reactions go to completion and are denoted by →.
  • Most reactions are theoretically reversible, but some proceed almost entirely in one direction.
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3. Characteristics of Equilibrium State

  • Equilibrium is dynamic — reactions continue at equal rates.
  • It can be reached from either direction (reactants or products).
  • Only possible in a closed system to prevent escape of substances.
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4. Physical and Chemical Equilibria

  • Physical equilibria include phase changes like solid-liquid, liquid-vapour, and solubility.
  • Chemical equilibria involve reversible chemical reactions.
  • Homogeneous equilibrium: all components in the same phase.

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Full Notes

Key Concepts

Reversible reactions proceed in both forwardAt equilibriumThe equilibrium constant Kc isWhen a system at equilibrium

Frequently Asked Questions

What are the important topics in Chemical Equilibrium for Telangana Open School (TOSS) Class 12 Chemistry?
Chemical Equilibrium covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Chemical Equilibrium — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 49 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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