The decomposition of ozone proceeds as :
`O_(3) rarr O_(2) + O` (fast)
`O+ O_(3) rarr 2O_(2)` (slow )
The rate expression should be :

Options

A. Rate = `k[O_(3)]^(2) `
B. Rate = `k[O_(3)]^(2) [O_(2) ]^(-1)`
C. Rate `=k[O_(3)][O_(2)]`
D. Rate `= k [O_(3)] [O_(2)]^(-1)`

Answer

B

Explanation

(B) k =`([O][O_(2)])/([O_(3)])`
or `[O] = k ([O_(3)])/([O_(2)])`
`:. "Rate" = (k[O_(3)][O_(3)])/([O_(2)])=[O_(3)]^(2)[O_(2)]^(-1)`