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Chapter 3 of 10
Concept Maps

Chemical Kinetics — Concept Maps

ICSE · Class 12 · Chemistry

4 concept maps of Chemical Kinetics for ICSE Class 12 Chemistry, each also written out as a text outline. Covers Molecularity, Mechanism, and Catalysis.

99 questions40 flashcards3 formulas & key relations5 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 Concept Maps

Determining Reaction Order from Rate Constant Units

Determining Reaction Order from Rate Constant Units

The map in words

  • Given: Rate Constant k with Units
    • What are the units?
      • time⁻¹ (s⁻¹, min⁻¹): Order = 1 (First-Order)
        • Use Integrated Rate Law: k = 2.303/t × log₁₀(A₀/A) t₁/₂ = 0.693/k
      • conc⁻¹ time⁻¹ (mol⁻¹L s⁻¹): Order = 2 (Second-Order)
        • Use Integrated Rate Law: k = 1/t × (A₀-A)/(A₀×A) t₁/₂ = 1/(k×A₀)
      • conc time⁻¹ (mol L⁻¹ s⁻¹): Order = 0 (Zero-Order)
        • Use Integrated Rate Law: k = (A₀-A)/t t₁/₂ = A₀/(2k)
      • conc⁻² time⁻¹ (mol⁻²L² s⁻¹): Order = 3 (Third-Order)
        • Use Integrated Rate Law: k = 1/t × expression t₁/₂ = 3/(2k×A₀²)
      • conc^(1-n) time⁻¹: Order = n (General)

Flowchart showing the decision process for calculating reaction rates with different stoichiometric coefficients

Flowchart showing the decision process for calculating reaction rates with different stoichiometric coefficients

The map in words

  • Reaction Rate Calculation
    • Measure concentration change of reactant or product
      • Same stoichiometric coefficients?
        • Yes: Rate = |Δ[conc
          • Final Rate Value
        • No: Divide by stoichiometric coefficient
          • Rate = |Δ[conc

Comparison of average and instantaneous rate calculations and their characteristics

Comparison of average and instantaneous rate calculations and their characteristics

The map in words

  • Measuring Reaction Rate
    • Average Rate Large Time Interval
      • Δt = t₂ - t₁
        • Rate = ΔC/Δt
          • Decreases with time
      • Used for intervals
    • Instantaneous Rate Infinitesimal Time
      • Δt → 0
        • Rate = dC/dt Tangent Slope
          • True rate at moment
      • Used for analysis

Chemical Kinetics: the study of reaction rates, rate laws, mechanisms, and the factors that control how fast reactions occur

Chemical Kinetics: the study of reaction rates, rate laws, mechanisms, and the factors that control how fast reactions occur

The map in words

  • Chemical Kinetics: the study of reaction rates, rate laws, mechanisms, and the factors that control how fast reactions occur
    • Reaction rate
    • Average rate of reaction
    • Instantaneous rate of reaction
    • Experimental measurement of rate
    • Factors affecting reaction rate
    • Nature of reactants
    • Law of mass action
    • Rate law

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Frequently Asked Questions

What are the important topics in Chemical Kinetics for ICSE Class 12 Chemistry?
Key topics in Chemical Kinetics include The rate of a chemical reaction, Average rate is the change, At constant temperature, The rate law is the experimentally. Study these first, then practise questions on each for the ICSE Class 12 board exam.
What do the concept maps for Chemical Kinetics show?
The 4 maps show how the ideas in Chemical Kinetics connect: Determining Reaction Order from Rate Constant Units; Flowchart showing the decision process for calculating reaction rates with different stoichiometric coefficients. Each map is also written out as an outline on this page.
How should I revise Chemical Kinetics for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 99 practice questions on Chemical Kinetics. 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.

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