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For the overall reaction between A and B...

For the overall reaction between A and B to yield C and D, two mechanisms are proposed:
I. `A+BtoAB*toC+D,k_(1)=1xx10^(-5)M^(-1)s^(-1)`
II. `AtoA"*"toE,k_(1)=1xx10^(-4)s^(-1)`,
`E+BtoC+d,k_(2)=1xx10^(10)M^(-1)s^(-1)`
(species with * are short lived)
AT what concetration of B, rates of two mechanism are equal?

A

1M

B

5M

C

7M

D

10M

Text Solution

Verified by Experts

The correct Answer is:
D
`r_(1)=r_(2),K_(1)^(1)[A]^(1)[B]^(1)=K_(1)[A]^(1),[B]^(1)=(K_(1))/(K_(1)^(1))=(1xx10^(-4))/(1xx10^(-5))=10`
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