1.

The gaseous decomposition of ozome `2O_(3)rarr3O_(2)` obeys the rate law `r=-(d[O_(3)])/(dt)=(k[O_(3)]^(2))/([O_(2)])` Show that the following mechanims is consistent with the above rate law : `O_(3)overset(K_(eq))hArrO_(2)+O" " ("fast")` `O+O_(3)overset(k_(1))rarr2O_(2)" " ("slow")`

Answer» From the slow rate determining step
`=-(d[O_(3)])/(dt)=k_(1)[O][O_(3)]`
From the fast reaction.,
`K_(eq)=([O_(2)][O])/([O_(3)])`
or `[O]=(K_(eq)[O_(3)])/([O_(2)])`
Substituting the value of [O] in the above expression
`r=-(d[O_(3)])/(dt)=(k_(1)K_(eq)[O_(3)]^(2))/([O_(2)])=(k[O_(3)]^(2))/([O_(2)])`


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