Pre-Equilibrium Approach

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Pre-Equilibrium Approach

Postby KarenaKaing_1D » Fri Feb 19, 2016 12:21 am

Can someone explain to me what step 2 is in the approach after treating the first step as equilibrium?

Shrita Pendekanti 4B
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Pre-Equilibrium Approach

Postby Shrita Pendekanti 4B » Fri Feb 19, 2016 12:17 pm

The objective of step 2 is to write the rate law of the rate-determining step (slow step) in a manner that agrees with the experimentally derived rate law. To do this, you must substitute the intermediate with something else that's present in the experimental rate law. So, you're substituting the intermediate [N2O2] with K[NO]^2, the relationship found in step 1, to get 2k[NO]^2[O2].

Hope this helps!

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