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Chemical Kinetics
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Rate of reaction, rate law, order and molecularity
JEE Main level
Single correct option
Difficulty 2 of 3
ck183
For
3
A
2
B
, B is formed at
0.060
M
s
−
1
. The rate of disappearance of A, in
M
s
−
1
, is
A
0.090
B
0.040
C
0.060
D
0.180
Answer: A
Rate of reaction
=
2
1
d
[
B
]
/
d
t
=
−
3
1
d
[
A
]
/
d
t
. Hence
−
d
[
A
]
/
d
t
=
(
3/2
)
(
0.060
)
=
0.090
M
s
−
1
.
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