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Chemical Kinetics

CBSE · Class 12 · Chemistry

Complete topic list for Chemical Kinetics in CBSE Class 12 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

32 questions22 flashcards5 concepts

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An infographic illustrating the key factors that influence the rate of a chemical reaction, such as concentration, temperature, surface area, catalyst, and nature of reactants.
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4 Topics · CBSE Class 12 Chemistry

Topics in Chemical Kinetics

1

Rate of Chemical Reaction

  • Rate of reaction is the change in concentration of reactants or products per unit time
  • Rate = -Δ[R]/Δt for reactants (negative sign because concentration decreases)
  • Rate = +Δ[P]/Δt for products (positive sign because concentration increases)
2

Factors Affecting Rate of Reaction

  • Concentration of reactants: Higher concentration generally increases rate
  • Temperature: Rate approximately doubles for every 10°C rise
  • Catalyst: Provides alternate pathway with lower activation energy
3

Rate Law and Rate Constant

  • Rate law: Rate = k[A]ˣ[B]ʸ where x,y are experimental orders
  • Rate law must be determined experimentally, not from balanced equation
  • Rate constant k is specific for each reaction at given temperature
4

Order and Molecularity

  • Order: Sum of exponents in rate law (can be 0, fraction, or integer)
  • Molecularity: Number of molecules participating in elementary reaction
  • Order is experimental, molecularity is theoretical

Key Concepts

Central concept: Chemical Kinetics: Study of reaction rates and mechanisms

Rate of ReactionFactors Affecting RateRate Law and Rate ConstantOrder of ReactionMolecularityIntegrated Rate EquationsTemperature DependenceCatalysis

Frequently Asked Questions

What are the important topics in Chemical Kinetics for CBSE Class 12 Chemistry?
Key topics in Chemical Kinetics include Chemical Kinetics - Complete Chapter Mind Map, Chemical Kinetics — Complete Chapter Overview, Chemical Kinetics — Complete Concept Map. These are the concepts CBSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Chemical Kinetics — CBSE Class 12 Chemistry?
Understand the core concepts first, then work through the 32 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.

More resources for Chemical Kinetics

All 10 chapters — CBSE Class 12 Chemistry Syllabus

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