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Second order and pseudo first order reactions
NEET level
Single correct option
Difficulty 1 of 3
ck059
The rate of a reaction is given by rate =
k
[
A
]
2
. If the concentration of
A
is tripled at constant temperature, the rate becomes
A
3 times
B
6 times
C
9 times
D
27 times
Answer: C
Rate
∝
[
A
]
2
, so tripling the concentration gives
3
2
=
9
times the original rate. The rate constant is unchanged because temperature is constant.
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