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The reaction 2A+B+C rarr D+E is found to...

The reaction `2A+B+C rarr D+E` is found to be firstt order in A, second in B and zero order in C. What is the effect on the rate of increasing concentration of A, B and C two times ?

A

72 times

B

8 times

C

24 times

D

36 times

Text Solution

Verified by Experts

The correct Answer is:
B
The rate law for the reaction is as :
`r=(dx)/(dt)=k(A)(B)^(2)(C)^(0)=k(A)(B)^(2)`
On increasing the concentrations of A, B and C two times.
`" "r.=(dx)/(dt)=k(2A)(2B)^(2)(2C)^(0)`
`" "=8k(A)(B)^(2)`
Thus, the rate increases eight times.
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