Calculating Order

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SanthosiSamudrala14B3K
Posts: 12
Joined: Fri Sep 25, 2015 3:00 am

Calculating Order

Postby SanthosiSamudrala14B3K » Thu Feb 18, 2016 4:12 pm

Consider the following mechanism. O3 → O2 + O (fast)
O3 + O → 2O2 (slow)

How do you calculate the order for each reactant in this problem?

Ronald Yang 2F
Posts: 86
Joined: Fri Sep 25, 2015 3:00 am

Re: Calculating Order

Postby Ronald Yang 2F » Thu Feb 18, 2016 9:55 pm

For elementary steps in a reaction mechanism, we just look at the molecularity to determine the overall order. So, basically, the number of reactants of a certain species determines the order of that reactant. Thus, it would be first order for O3 in step 1, and it would be first order for O3 and first order for O in step 2.


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