Enzymes in rate law

[Deborah Cheng 1F]

I believe Dr. Lavelle mentioned this in class but I just wanted to clarify, catalysts can be in the rate law?

[Gianna Apoderado 1B]

Yes, because the concentration of catalysts affect the reaction rate, the higher the concentration, the faster the reaction!

[skalvakota2H]

Catalysts can be included in the rate law. This occurs when the catalyst is involved in the rate-determining step, since the reactants of the rate-determining step is what decides the overall rate law. However, if the catalyst is involved in a different step, then it will not appear in the rate law.

[Deborah Cheng 1F]

I see, so if the catalysts are not necessarily always going to be in the rate determining step and therefore will not always show up in the rate law?

[Wenxin Fan 1J]

In most cases, catalysts will not be included in the rate law since it is not usually involved in the slow, rate determining step.