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Chemical Kinetics

Telangana Open School (TOSS) · Class 12 · Chemistry

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

47 questions30 flashcards5 concepts

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Key Topics to Revise

1

Rate of a Chemical Reaction

  • The rate of a chemical reaction is defined as the change in concentration of a reactant or product per unit time.
  • Rate = Change in concentration / Time taken
  • Units: mol L⁻¹ s⁻¹ or mol dm⁻³ s⁻¹
2

Rate Law and Order of Reaction

  • Rate law expresses the relationship between reaction rate and concentrations of reactants.
  • It is determined experimentally and cannot be predicted from balanced equation.
  • General form: Rate = k [A]^x [B]^y, where x and y are orders with respect to A and B.
3

Zero, First, and Second Order Reactions

  • Zero order: Rate is independent of reactant concentration. Unit of k is mol L⁻¹ s⁻¹.
  • First order: Rate is directly proportional to concentration. Unit of k is s⁻¹.
  • Second order: Rate proportional to square of concentration or product of two concentrations. Unit of k is L mol⁻¹ s⁻¹.
4

Effect of Temperature and Arrhenius Equation

  • Reaction rate increases with temperature.
  • For many reactions, rate doubles with 10°C rise in temperature.
  • Molecules must possess minimum energy called activation energy (Eₐ) to react.

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Full Notes

Key Concepts

The rate of a chemical reactionAverage rate is the changeThe rate law expresses the rateThe order of a reactionThe half

Frequently Asked Questions

What are the important topics in Chemical Kinetics for Telangana Open School (TOSS) Class 12 Chemistry?
Chemical Kinetics 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 Kinetics — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 47 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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