Catalysts in Rate Law


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Jacob Bershatski 4C
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

Catalysts in Rate Law

Postby Jacob Bershatski 4C » Thu Mar 14, 2019 11:03 pm

For a given reaction mechanism, can catalysts be included in the rate law?
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EllerySchlingmann1E
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

Re: Catalysts in Rate Law

Postby EllerySchlingmann1E » Thu Mar 14, 2019 11:05 pm

Catalysts can be included in the rate law, just intermediates cannot.
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Kathryn 1F
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

Re: Catalysts in Rate Law

Postby Kathryn 1F » Thu Mar 14, 2019 11:06 pm

Yes! I'm pretty sure, because it would be hard to cancel them out due to intermdiates.

for eg, take
A+catalyst-->B (fast)
B-->C + catalyst (slow)

you could cancel out for B, but then your expression would be in terms of the catalyst
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Rhea Churi 4K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Catalysts in Rate Law

Postby Rhea Churi 4K » Thu Mar 14, 2019 11:08 pm

Yes, catalysts can be included in the rate law.
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Yvonne Du
Posts: 64
Joined: Fri Sep 28, 2018 12:23 am

Re: Catalysts in Rate Law

Postby Yvonne Du » Thu Mar 14, 2019 11:12 pm

I asked my TA today, he said catalysts can be included in elementary step rate laws, but not the overall?
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Jonny Schindler 1A
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Joined: Fri Sep 28, 2018 12:20 am

Re: Catalysts in Rate Law

Postby Jonny Schindler 1A » Fri Mar 15, 2019 2:03 am

So does an increased concentration of an aqueous catalyst increase the rate of the reaction?
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