1.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
Studies the rate at which a chemical process
occurs.
kinetics also sheds light on the reaction
mechanism (exactly how the reaction occurs).
KINETICS

2.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
The speed of a reaction or the rate of a
reaction is defined as the change in
concentration of a reactant or product per
unit time.
RATE OF A CHEMICAL REACTION

3.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
Concentration: The rate of a chemical
reaction at a given temperature depends on
the concentration of one or more reactants
and products.
Surface area of a solid reactant: Increasing the
surface area of the solid-phase reactant
increases the number of collisions per second
and therefore increases the reaction rate.
Nature of the reactants
FACTORS AFFECTING RATE OF
A REACTION (1/2)

4.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
Pressure of a reactant:�Under higher pressure
or at a higher concentration, gas molecules
collide more frequently and react at a faster
rate.
Temperature:�A general rule is that a 10�C
temperature increase can double a reaction
rate.
presence/absence of a catalyst: The addition
of the catalyst increases the reaction rate.
FACTORS AFFECTING RATE OF
A REACTION (2/2)

5.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
The representation of rate of a reaction in
terms of concentration of the reactants is
known as rate law.
RATE LAW

6.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
The sum of powers of the concentration of the
reactants in the rate law expression is called
the order of that chemical reaction.
ORDER OF A REACTION

7.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
The sum of powers of the concentration of the
reactants in the rate law expression is called
the order of that chemical reaction.
ORDER OF A REACTION

8.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
RATE CONSTANT (1/2)

9.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
Units of rate constant
RATE CONSTANT (2/2)

10.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
INTEGRATED RATE EQUATIONS

11.
STUDYDUNIYA
The Educational Social Network
C H E M I S T R Y - � P H Y S I C A L -
C H E M I C A L K I N E T I C S
IIT JEE @studyduniya +91 7744994714
A 10�C temperature increase can double a
reaction rate.
TEMPERATURE DEPENDENCE OF
THE RATE OF A REACTION
Arrhenius equation