Class 12 Chemistry Chemical Kinetics Notes (Handwritten Notes)

Here we have shared class 12 Chemistry Chemical Kinetics Notes. Chemical Kinetics notes is a best resources for students who are preparing for their board exam because it compile the entire lesson into short and includes every important topics.

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Class 12 Chemistry Chemical Kinetics Handwritten Notes

Next Chapter: The d & f Block Elements
Previous Chapter: Electrochemistry

Other Subjects:
Class 12 Biology Notes
Class 12 Physics Notes

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Key Points: Chemical Kinetics Notes PDF

Chemical Kinetics

The Branch of chemistry which deals with the Study of speed or rate of chemical reactions, the factar affecting the mate of reaction and the mechanism by which the reaction proceed is known as chemical kinetics.

Rate of Reaction

The rate of reaction is the change in the concentration of any one of the reactants or product per unit time.

Rate Law

It states that rate of chemical reaction is directly proportional to product of concentration of reactant to the some power, which may or may not be equal to Mespective stoichiometric coefficient.

Factors Influencing Rate of reaction :

1. Nature of reactant :- different amount of energies are required for breaking of different bond and different amount of energies are released in formation of bond.
2. Concentration : Greater the reactant’s concentration, faster the reaction.
3. Temperature: The rate of reaction increases on increasing of temperature.
4. Presence of catalyst : A catalyst generally increase the speed of a reaction without being consumed in reaction.
5. Surface area of reactant : greater the surface area, faster the reaction.
6. Presence of Madiation: some reaction’s rate increases with increase in intensity of light.

Rate Constant (K)

It may be defined as the rate of reaction when the molar concentration of each reactant is taken as unity. That is why rate constant is also called specific reaction rate.

Molecularity of a Reaction

The number of reacting species (atoms, ions ar molecules) taking part in an elementary reaction, which must collide simultaneously in order to bring about a chemical reaction is called molecularity of a reaction.

Activation energy

Activation energy is the energy given or required by reactant to reach the threshold point so that the intermediate can be farmed and product farmation takes place.

Collision Theory

Reactant are considered as hard sphere, when the hard sphere collide with each other with suitable kinetic energy they form an intermediate followed by product.

• The number of particles that collide per second in a given volume is called as collision frequency (z).
• In gaseous phase, for binary collision system the z is in range of 10^25 – 10^28.
• If after collision they are able to farm product then collision is effective.
• reaction will take a very short time and vice-versa.

Catalyst: Those substance that decreases on increases the rate of reaction without participating chemically in a meaction.

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