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CBSE Class 12 Chemistry Notes: Chemical Kinetics – Collision Theory of Rate of Reaction

by Anand Meena
April 22, 2019
in 12th Class, Class Notes
Reading Time: 2min read
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Important Definitions:

Active Molecules:

  • Those molecules which attain the minimum energy required for a chemical reaction.

Activation Energy:

  • Minimum amount of energy required by a reactant molecule to participate in a reaction is called Activation energy.

Threshold Energy:

  • Minimum amount of energy which must be associated with the molecules so that their collision results into product formation.
  • Threshold energy = Activation energy + Energy Possessed by molecules.

 

Collision Frequency:

The number of collisions taking place per second per unit volume of the        reaction mixture is known as Collision Frequency Z.
Incase of binary collision Z = 1025   to   1028.

According to collision theory

  • Reacting species must possess the adequate energy to overcome the energy barrier
  • Reacting species must be properly oriented at the time of collision.
  • Reactant → Activated Complex → Product
  • The molecule which have sufficient activation energy from activated complex which decompose in product.
  • Orientation of molecule:-

Example:

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Class 12 Chemistry Chemical Kinetics All Topics Notes CBSE Class 12 Chemistry All Chapters Notes

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Tags: 12 Chemistry12 Class ChemistryCBSE NotesChemistry for Class 12Class 12 NotesClass 12thClass XII ChemistryFree NotesXII Class

Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

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