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fast step before slow step

Posted: Sun Mar 17, 2019 9:12 am
by marcus lin 1E
Why do we have to assume that the slow step comes after the fast step?

Re: fast step before slow step

Posted: Sun Mar 17, 2019 9:21 am
by Matthew Tran 1H
This is not a general assumption. It's most likely that we will be given whether a step is slow or fast. Fast step before the slow step is a condition that must be met in order to do the pre-equilbrium approach. If the slow step is the first step, then it is the rate determining step and its rate law is the overall rate law.

Re: fast step before slow step

Posted: Sun Mar 17, 2019 9:45 am
by Briana Lopez 4K
The slow step requires more energy for the reaction to achieve, and in turn, more time which is why it is the rate-determining step