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Ionic Equilibria

Maharashtra Board · Class 12 · Chemistry

Quick revision notes for Ionic Equilibria — Maharashtra Board Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

44 questions25 flashcards5 concepts

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Key Topics to Revise

1

Types of Electrolytes and Degree of Dissociation

  • Strong electrolytes: Complete ionization (HCl, NaOH, salts)
  • Weak electrolytes: Partial ionization with equilibrium establishment
  • Degree of dissociation (α) = moles dissociated / total moles
2

Theories of Acids and Bases

  • Arrhenius Theory: Acids produce H⁺, bases produce OH⁻ in water
  • Brønsted-Lowry Theory: Acids are proton donors, bases are proton acceptors
  • Lewis Theory: Acids accept electron pairs, bases donate electron pairs
3

Ostwald's Dilution Law and Dissociation Constants

  • Applies to weak electrolytes in equilibrium state
  • Degree of dissociation increases with dilution
  • Ka and Kb are equilibrium constants for weak acids and bases
4

Autoionization of Water and pH Scale

  • Pure water undergoes self-ionization: 2H₂O ⇌ H₃O⁺ + OH⁻
  • Ionic product of water: Kw = [H₃O⁺][OH⁻] = 1.0 × 10⁻¹⁴ at 25°C
  • pH = -log₁₀[H⁺], pOH = -log₁₀[OH⁻]

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Full Notes

Key Concepts

Strong electrolytes (HClArrheniusFor weak acidsWater undergoes selfSalts of strong acid + strong

Frequently Asked Questions

What are the important topics in Ionic Equilibria for Maharashtra Board Class 12 Chemistry?
Ionic Equilibria covers several key topics that are frequently asked in Maharashtra Board 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 Ionic Equilibria — Maharashtra Board Class 12 Chemistry?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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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