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Elementary steps

Posted: Sat Mar 17, 2018 8:34 pm
by Bansi Amin 1D
In elementary steps, how are we finding the order when we're writing the rate laws? Are they coming from the stoichiometric coefficients because these are elementary steps? Because I know that the order isn't related to the stoichiometric coefficient, but when doing the mechanism problems, that's what it seemed like.

Re: Elementary steps

Posted: Sat Mar 17, 2018 9:18 pm
by Riya Pathare 2E
We use the coefficients in mechanisms/elementary steps but this is not valid for the overall reaction.

Re: Elementary steps

Posted: Sun Mar 18, 2018 9:12 am
by Sarah Maraach 2K
Yes, for problems in which we are finding the overall rate law using elementary steps, you would use the coefficients as the order of each individual step's rate law. For an overall rate law, you can't.