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Homogenous vs. Heterogenous Catalyst and Rate Law

Posted: Sun Mar 04, 2018 4:42 pm
by Ava Harvey 2B
I understand that the difference between a homogenous and heterogenous catalyst lies in the phase of the catalyst. However, the book mentions that the concentration of a homogeneous catalyst does appear in the rate law, but it doesn't mention whether a heterogenous catalyst appears in the rate law. I was just wondering if the same concept applied, and if not, the reasoning behind that. If anyone has an explanation, that would be great! Thanks so much!

Re: Homogenous vs. Heterogenous Catalyst and Rate Law

Posted: Sun Mar 04, 2018 6:47 pm
by Shawn Patel 1I
Hey,
I would assume heterogenous catalysts would be included in the rate law because its purpose as a catalyst is still the same. It lowers the activation energy, increasing the reaction speed, so the rate would be affected.

Re: Homogenous vs. Heterogenous Catalyst and Rate Law

Posted: Sun Mar 04, 2018 8:45 pm
by Lindsay Kester 2L
I think that since heterogeneous catalysts are usually used in the solid phase, their appearance in the rate law would depend on the phases of the other reactants and products.