Chemical Kinetics Ques 18
18. For a reaction between $A$ and $B$ the order with respect to $A$ is 2 and the order with respect to $B$ is 3. The concentrations of both $A$ and $B$ are doubled, the rate will increase by a factor of:
[NEET Kar. 2013]
(a) 10
(b) 12
(c) 16
(d) 32
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Answer:
Correct Answer: 18.(d)
Solution:
(d) $Rate_1=k[A]^{2}[B]^{3}$
when concentrations of both $A$ and $B$ are doubled then
Rate $_2=k[2 A]^{2}[2 B]^{3}=32 k[A]^{2}[B]^{3}$
$\therefore$ Rate will increase by a factor of 32 .
BETA
