CLASS -
12ᵗʰ
2022-23
HANDWRITTEN NOTES
Chemical kinetics
By Bharat Panchal
-
Sir
Telegram BBEBBr Bharat Panchal Sir
•B*⑤*§Bo¥É CHEMISTRY GURUJI 2-0
with love for # BPARMY
, 4. CHEMICAL KINE HCS
when one or more substance undergo a
change which
results in the formation of a new product ,
called chemical
reaction .
CHEMICAL KINETICS is the branch of chemistry which
,
deals with the study of gates of chemical reaction
their mechanism and the conditions in which hate
can be altered .
ON THE BASIS OF SPEED
it VERY FAST REACTION : some reaction such as
ionic reactions occur very
fast Agnos + Nacl Ago + NANO}
e.g →
ii ) VERY SLOW REACTION : some reactions are
slow i. e takes
very
months to years in eombletion
e.
g. Rusting of iron in the presence of air and moisture
formation of coal and bebolium
•
•
iii) MODERATE REACTION i. Those reactions which are
very slow norneither
very fast but takes place at moderate speed .
inversion of cane sugar
e.
g
921122011 +
Hyo ↳ HI 206 1- CGH 1206
fructose Glucose
ON THE BASIS OF NUMBER OF STEPS
COMPLEX REACTIONS
ELEMENTARY REACTIONS when a sequence of elementary
reactions gives us the product called
complex reaction each step in a
The reactions taking place
,
complex reaction is called elementary Rxh
in called
.
one step are
slowest step is called rate
elementary reaction
determining step .
,RATE OF CHEMICAL REACTION :
It is the change in
molar
concentration
of species taking part in the chemical reaction
per unit time .
for the reaction A →B
Rate
of disappearance of A
in do A
Decrease
A£A?-
=
cone .
= -
Time taken
Rate of disappearance of B
in GB
A£B÷
= Increase conc .
= +
Time taken
NOTE
concentration
The
of reactant
decreases so it ,
represent by -
resign ,
while
the conc .
of product increases
it + ve sign
¢
so represented by .
TYPES OF RATE OF REACTION :
AverageRatewM InstantaneousRaleweM
change in molar conc .
change in molar cone of reactant
of reactant and product and product at a given
at a given interval of time instant of time .
R > P
%¥=+%¥
Rate of Inst
Avs
A¥=+a¥?
.
-
-
Rate of reaction
Reaction
RELATION BETWEEN RATE OF REACTION AND STOICHIOMETRY
•
) At B T C -117
Rate of Rxn
dEdA÷= ddEB÷= dd¥ + +
%¥
-
-
=
It is clear from stoichiometry of reaction
•
) 2A → c. + p
that the rate of disappearance of A
is twice the velocity of formation of C 8D
12ᵗʰ
2022-23
HANDWRITTEN NOTES
Chemical kinetics
By Bharat Panchal
-
Sir
Telegram BBEBBr Bharat Panchal Sir
•B*⑤*§Bo¥É CHEMISTRY GURUJI 2-0
with love for # BPARMY
, 4. CHEMICAL KINE HCS
when one or more substance undergo a
change which
results in the formation of a new product ,
called chemical
reaction .
CHEMICAL KINETICS is the branch of chemistry which
,
deals with the study of gates of chemical reaction
their mechanism and the conditions in which hate
can be altered .
ON THE BASIS OF SPEED
it VERY FAST REACTION : some reaction such as
ionic reactions occur very
fast Agnos + Nacl Ago + NANO}
e.g →
ii ) VERY SLOW REACTION : some reactions are
slow i. e takes
very
months to years in eombletion
e.
g. Rusting of iron in the presence of air and moisture
formation of coal and bebolium
•
•
iii) MODERATE REACTION i. Those reactions which are
very slow norneither
very fast but takes place at moderate speed .
inversion of cane sugar
e.
g
921122011 +
Hyo ↳ HI 206 1- CGH 1206
fructose Glucose
ON THE BASIS OF NUMBER OF STEPS
COMPLEX REACTIONS
ELEMENTARY REACTIONS when a sequence of elementary
reactions gives us the product called
complex reaction each step in a
The reactions taking place
,
complex reaction is called elementary Rxh
in called
.
one step are
slowest step is called rate
elementary reaction
determining step .
,RATE OF CHEMICAL REACTION :
It is the change in
molar
concentration
of species taking part in the chemical reaction
per unit time .
for the reaction A →B
Rate
of disappearance of A
in do A
Decrease
A£A?-
=
cone .
= -
Time taken
Rate of disappearance of B
in GB
A£B÷
= Increase conc .
= +
Time taken
NOTE
concentration
The
of reactant
decreases so it ,
represent by -
resign ,
while
the conc .
of product increases
it + ve sign
¢
so represented by .
TYPES OF RATE OF REACTION :
AverageRatewM InstantaneousRaleweM
change in molar conc .
change in molar cone of reactant
of reactant and product and product at a given
at a given interval of time instant of time .
R > P
%¥=+%¥
Rate of Inst
Avs
A¥=+a¥?
.
-
-
Rate of reaction
Reaction
RELATION BETWEEN RATE OF REACTION AND STOICHIOMETRY
•
) At B T C -117
Rate of Rxn
dEdA÷= ddEB÷= dd¥ + +
%¥
-
-
=
It is clear from stoichiometry of reaction
•
) 2A → c. + p
that the rate of disappearance of A
is twice the velocity of formation of C 8D
