Page 1
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
1
Physical
Chemistry
TOPIC: CHEMICAL KINETICS
Target CSIR-NET/GATE
2637, Hudson Lane, Behind Khalsa College, Near G.T.B.
Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail:
info@asfinstitute.com, www.asfinstitute.com
Page 2
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
1
Physical
Chemistry
TOPIC: CHEMICAL KINETICS
Target CSIR-NET/GATE
2637, Hudson Lane, Behind Khalsa College, Near G.T.B.
Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail:
info@asfinstitute.com, www.asfinstitute.com
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
2
SOME IMPORTANT GRAPH REPRESENTATION
Use in chemical kinetics :
(1) y = mx + C
(2) y = –mx + C
(3) y = mx
Page 3
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
1
Physical
Chemistry
TOPIC: CHEMICAL KINETICS
Target CSIR-NET/GATE
2637, Hudson Lane, Behind Khalsa College, Near G.T.B.
Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail:
info@asfinstitute.com, www.asfinstitute.com
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
2
SOME IMPORTANT GRAPH REPRESENTATION
Use in chemical kinetics :
(1) y = mx + C
(2) y = –mx + C
(3) y = mx
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
3
(4) y = –mx
Slope = –m = tan ?
Intercept = zero
(5) y = e
x
(6) y = e
–x
Page 4
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
1
Physical
Chemistry
TOPIC: CHEMICAL KINETICS
Target CSIR-NET/GATE
2637, Hudson Lane, Behind Khalsa College, Near G.T.B.
Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail:
info@asfinstitute.com, www.asfinstitute.com
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
2
SOME IMPORTANT GRAPH REPRESENTATION
Use in chemical kinetics :
(1) y = mx + C
(2) y = –mx + C
(3) y = mx
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
3
(4) y = –mx
Slope = –m = tan ?
Intercept = zero
(5) y = e
x
(6) y = e
–x
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
4
(7) y =
1
x
Page 5
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
1
Physical
Chemistry
TOPIC: CHEMICAL KINETICS
Target CSIR-NET/GATE
2637, Hudson Lane, Behind Khalsa College, Near G.T.B.
Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail:
info@asfinstitute.com, www.asfinstitute.com
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
2
SOME IMPORTANT GRAPH REPRESENTATION
Use in chemical kinetics :
(1) y = mx + C
(2) y = –mx + C
(3) y = mx
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
3
(4) y = –mx
Slope = –m = tan ?
Intercept = zero
(5) y = e
x
(6) y = e
–x
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
4
(7) y =
1
x
2637, Hudson Lane, Behind Khalsa College, Near G.T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi – 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www.asfinstitute.com
5
CHEMICAL KINETICS
“Chemical kinetics involves the study of the rates and mechanism of chemical reactions.”
The rates of reactions :
(a) The definition of rate : Consider a reaction of the form
A + 2B ? 3C + D …(1)
in which the molar concentration of participants are [A], [B], [C] & [D].
The rate of consumption or decomposition of the one of the reactants at a given time is
[ ] d R
dt
? , where R is A or B. The rate of formation of one of the products is
[ ] d P
dt
, where P is C or D.
The rate of reaction can be expressed with respect to any species in equation (1).
Rate =
[ ] 1 [ ] 1 [ ] [ ]
2 3
d A d B d C d D
dt dt dt dt
? ? ? ?
Thus, the rate of reaction can be defined with respect to both reactants and products.
For example :
4NO
2
(g) + O
2
(g) ? 2N
2
O
2
(g)
find the expression for rate of reaction.
Sol. 4NO
2
(g) + O
2
(g) ? 2N
2
O
2
(g)
rate =
2 5 2 2
[ ] 1 [ ] [ ] 1
4 2
d N O d NO d O
dt dt dt
? ? ?
(b) Rate laws and rate constant :
The rate of a reaction will generally depends on temperature pressure and concentration of
species involving in the reaction.
The rate of reaction is proportional to the molar concentration of reacting species.
i.e. A + B + C + D + ……. ? Product
then, rate of reaction = k[A]
a
[B]
b
[C]
c
[D]
d
………..
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