Catalysts in Rate Law
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Catalysts in Rate Law
Other than the example of OH- and H3O+ concentration being the rate law that Dr. Lavelle talked about, is there ever going to be a time where you include a catalyst in the rate law? I remember in high school chemistry I was told that a catalyst would be included, only if in the slow step, because it affected the rate. What Dr. Lavelle said in class was a little confusing.
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Re: Catalysts in Rate Law
In lecture, I believe Dr. Lavelle noted that catalysts speed up the slow step of the reaction, usually enough that it is no longer the slow step (the reaction would then be limited by a different step). However, if that the catalyzed step still remains the slowest even with the catalyst, then the catalyst would be included in the rate law.
Hopefully this helps and please correct me if there are any mistakes.
Hopefully this helps and please correct me if there are any mistakes.
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Re: Catalysts in Rate Law
Hello! From my understanding there are extremely minimal occasions where catalysts will show up in the rate law.
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Re: Catalysts in Rate Law
Catalysts only show up if they are part of the reactants in the rate determining step (the slowest step). This is pretty rare, but it does happen.
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Re: Catalysts in Rate Law
Hi. I believe that catalysts are included in the rate law if they are involved in speeding up the slow step of a reaction. It also might help to view the overall balanced equation. Just remember that you may see catalysts in the balanced equation but not intermediates. Just some additional information that I hope can help!
Re: Catalysts in Rate Law
Hi!
So catalysts are not usually present in the overall equilibrium reaction, but it can appear in the rate law if the catalyst is a reactant in the rate-determining step, because that makes it a part of the reactants since it is changing the rate.
So catalysts are not usually present in the overall equilibrium reaction, but it can appear in the rate law if the catalyst is a reactant in the rate-determining step, because that makes it a part of the reactants since it is changing the rate.
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Re: Catalysts in Rate Law
Based on this, a reaction would not be able to be zero order if the catalyst is a reactant in the rate-determining step?
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Re: Catalysts in Rate Law
Hello, catalysts job is to speed up the slow part of the reaction, and only then are they included in the rate law. However, it is rare and catalysts do not always show up in the rate laws. I hope this helps!:)
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