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Reaction A+BtoC+D is started with 1 M of...

Reaction `A+BtoC+D` is started with 1 M of each A and B and follows the rate law
`r=k[A]^(1//2)[B]^(1//2)`
What is the time taken for the concentration of A to drop to 0.1 M `(K=2.303xx10^(-3)sec^(-1))`

A

57 sec

B

100 sec

C

434 sec

D

1000 sec

Text Solution

Verified by Experts

The correct Answer is:
D
`A+BtoC+D`
`t=0 1M1M`
`r=k[A]^(1//2)[B]^(1//2)`
if initial concentration of A & B are same then `r=k (A)^(1)`
`(2.303)/(2.303xx10^(-3))"log"(1)/(0.1)=1000sec.`
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