Question

A following mechanism has been proposed for a reaction
`2A +B rarr D rarr E`
`A+ B rarrC+D `(slow)
`A+C rarr E` (fast)
The rate law expression for the reaction by RDS methd is:
A. `r=k[P][Q]`
B. `r=k[P]^(2)`
C. `r=k[P][T]`
D. `r=k[P]^(2)[Q]`

Answer 1

Correct Answer - A
Rate is controlled by the slowest step.
`therefore" "r=k[P][Q]`