CBSE Grade 12 Chemistry Part 1 | 3. Chemical kinetics by Pavan | Learn Smarter
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3. Chemical kinetics

Chemical kinetics focuses on the rates of chemical reactions and the factors influencing these rates. It includes concepts such as average and instantaneous rates, the rate law, molecularity, and the impact of temperature and catalysts on reaction speeds. Understanding these principles aids in the practical application of chemistry in processes like pharmaceuticals and industrial reactions.

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Sections

  • 3

    Chemical Kinetics

    Chemical kinetics studies the rates of chemical reactions and the factors that influence these rates.

    Learning Practice

  • 3.1

    Rate Of A Chemical Reaction

    This section describes the factors influencing the rate of chemical reactions, including how concentration, temperature, and catalysts affect reaction kinetics.

    Learning Practice

  • 3.1.1

    Definition Of Rate Of Reaction

    This section defines the rate of reaction, exploring average and instantaneous rates, and the factors that influence these rates.

    Learning Practice

  • 3.1.2

    Units Of Rate Of A Reaction

    This section discusses how to define and calculate the rate of a chemical reaction using concentration changes over time, introducing concepts such as average and instantaneous rates.

    Learning Practice

  • 3.2

    Factors Influencing Rate Of Reaction

    This section discusses the factors that affect the rate of chemical reactions, including concentration, temperature, and catalysts.

    Learning Practice

  • 3.2.1

    Dependence Of Rate On Concentration

    This section explores how the rate of chemical reactions depends on the concentration of reactants, introducing concepts such as rate law and order of reaction.

    Learning Practice

  • 3.2.2

    Rate Expression And Rate Constant

    This section introduces the concepts of rate expressions and rate constants, detailing how reaction rates depend on concentration and the mathematical framework for expressing these relationships.

    Learning Practice

  • 3.2.3

    Order Of A Reaction

    This section discusses the concept of reaction order, including its definition, relationship with rate laws, and how to discern overall order from the rate expressions.

    Learning Practice

  • 3.2.4

    Molecularity Of A Reaction

    Molecularity refers to the number of reacting species involved in an elementary reaction and can be unimolecular, bimolecular, or termolecular depending on how many reactants collide and react.

    Learning Practice

  • 3.3

    Integrated Rate Equations

    This section covers integrated rate equations for chemical reactions, specifically focusing on zero-order and first-order reactions.

    Learning Practice

  • 3.3.1

    Zero Order Reactions

    Zero order reactions are characterized by a constant reaction rate that does not depend on the concentration of reactants.

    Learning Practice

  • 3.3.2

    First Order Reactions

    This section discusses first-order reactions in detail, explaining their characteristics, rate equations, and integrated rate laws.

    Learning Practice

  • 3.3.3

    Half-Life Of A Reaction

    This section discusses the half-life of chemical reactions, highlighting its significance in understanding reaction kinetics.

    Learning Practice

  • 3.4

    Temperature Dependence Of The Rate Of A Reaction

    This section explores how temperature influences chemical reaction rates.

    Learning Practice

  • 3.4.1

    Effect Of Catalysis

    A catalyst speeds up a chemical reaction without undergoing a permanent change.

    Learning Practice

  • 3.5

    Collision Theory Of Chemical Reactions

    The Collision Theory explains how chemical reactions occur at the molecular level, emphasizing the importance of molecular collisions, activation energy, and proper orientation.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Chemical reactions can be f...
  • The rate law, which can be ...
  • The order and molecularity ...

Final Test

Revision Tests