1
Question
Ozone depletion takes place as, 2O3(g)⟶3O2(g):
Step 1: O3(g)k⇌O2(g)+[O](g) (fast)
Step 2: O3(g)+[O]k′−−−−−−−−−→2O2(g) (slow)
The order of the overall reaction is:
Ozone depletion takes place as, 2O3(g)⟶3O2(g):
Step 1: O3(g)k⇌O2(g)+[O](g) (fast)
Step 2: O3(g)+[O]k′−−−−−−−−−→2O2(g) (slow)
The order of the overall reaction is:
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Solution
The correct option is C 1
The slow step is rate-determining step.
Rate=k′[O3][O]-----------------1
Now, k=[O2][O][O3]
[O]=k[O3][O2]
Substitute value of [O] in equation 1
Rate=k′.k[O3]2[O2]−1
overall order =2−1=1
The slow step is rate-determining step.
Rate=k′[O3][O]-----------------1
Now, k=[O2][O][O3]
[O]=k[O3][O2]
Substitute value of [O] in equation 1
Substitute value of [O] in equation 1
Rate=k′.k[O3]2[O2]−1
overall order =2−1=1
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