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Class 12 NEET Chemistry Chemical Kinetics Questions
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© examsnet.com
Question : 12
Total: 73
For a first order reaction
A
→
Products, initial concentration of
A
is
0.1
M
, which becomes
0.001
M
after 5 minutes. Rate constant for the reaction in
min
−
1
is
[NEET-2022]
1.3818
0.9212
0.4606
0.2303
Validate
Solution:
👈: Video Solution
For first order reaction,
K
=
2.303
t
log
[
A
0
]
[
A
]
;
where
A
0
is the initial concentration of reactant
A
A
0
=
0.1
M
A
=
0.001
M
t
=
5
minute
K
=
2.303
5
log
0.1
0.001
=
2.303
5
log
10
2
=
2.303
5
×
2
K
=
0.9212
m
i
n
−
1
© examsnet.com
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