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Ionic Equilibrium — Revision Notes

Telangana Open School (TOSS) · Class 12 · Chemistry

Ionic Equilibrium revision notes for Telangana Open School (TOSS) Class 12 Chemistry: 4 topics in quick points.

53 questions35 flashcards15 formulas & key relations5 concepts

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Key Topics to Revise

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1. Concepts of Acids and Bases

  • Arrhenius concept: Acids produce H⁺ ions, bases produce OH⁻ ions in water.
  • Bronsted-Lowry concept: Acids are proton donors, bases are proton acceptors.
  • Lewis concept: Acids accept electron pairs, bases donate electron pairs.
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2. Strength of Acids and Bases

  • Strong acids/bases ionize completely in water; weak ones partially ionize.
  • Ka (acid dissociation constant) measures strength of weak acids.
  • Kb (base dissociation constant) measures strength of weak bases.
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3. Self-Ionization of Water and pH Scale

  • Water undergoes auto-ionization: H₂O + H₂O ⇌ H₃O⁺ + OH⁻.
  • Ionic product of water, Kw = [H₃O⁺][OH⁻] = 1.0 × 10⁻¹⁴ at 298 K.
  • pH = -log[H₃O⁺], pOH = -log[OH⁻], and pH + pOH = 14.
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4. Common Ion Effect and Buffer Solutions

  • Common ion effect suppresses ionization of weak acids or bases when a salt with the same ion is added.
  • Buffer solutions resist pH change upon addition of small amounts of acid or base.
  • Acidic buffers: weak acid + its salt (e.g., CH₃COOH + CH₃COONa).

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Full Notes

Key Concepts

Arrhenius defines acids as substancesWeak acids and bases do notpH is defined as the negativeBuffers resist pH changes when smallFor sparingly soluble salts

Frequently Asked Questions

What are the important topics in Ionic Equilibrium for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in Ionic Equilibrium include Concepts of Acids and Bases, Strength of Acids and Bases, Self-Ionization of Water and pH Scale, Common Ion Effect and Buffer Solutions. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Ionic Equilibrium for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 53 practice questions on Ionic Equilibrium. Revise 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.

More resources for Ionic Equilibrium

All Telangana Open School (TOSS) Class 12 Chemistry Revision Notes

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