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Class 12 NEET Chemistry Chemical Kinetics Questions
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Question : 23
Total: 73
The correct difference between first- and second –order reactions is that
[NEET 2018]
The rate of a first –order reaction does not depend on reactant concentration, the rate of a second –order reaction does depend on reactant concentration
The half-life of a first-order reaction doesnot depend on
[
A
]
0
;the half-life of a second–order reaction does depend on
[
A
]
0
The rate of a first order reaction does depend on reactant concentrations; the rate of a second order reaction does not depend on reactant concentrations
a first order reaction can be catalyzed ; a second order reaction cannot be catalysed
Validate
Solution:
👈: Video Solution
For first order reaction,
t
1
2
=
0.693
k
,
which is independent of initial concentration of reactant.
For second order reaction,
t
1
2
=
1
k
[
A
0
]
,
which depends on initial concentration of reactant.
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