Catalysts vs Intermediates

Arrhenius Equation:

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Tamera Scott 1G
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

Catalysts vs Intermediates

Postby Tamera Scott 1G » Wed Mar 13, 2019 7:33 pm

Today in lecture Lavelle explained the difference between catalysts and intermediates, but I still don't understand how you can decipher between the two?

Celine Cheng 1H
Posts: 33
Joined: Fri Sep 28, 2018 12:21 am
Been upvoted: 1 time

Re: Catalysts vs Intermediates

Postby Celine Cheng 1H » Wed Mar 13, 2019 7:35 pm

An intermediate is formed and consumed during the multi-step process, whereas a catalyst is there from the beginning. There is no formation of the catalyst.

Lily Benitez 2G
Posts: 63
Joined: Fri Sep 28, 2018 12:29 am

Re: Catalysts vs Intermediates

Postby Lily Benitez 2G » Wed Mar 13, 2019 7:38 pm

So what I got form today is that catalyst are already present in the reaction, and in a later step they are removed. The intermediates are produced later and not originally present in the reaction. Only to be used up by the reaction in another step.

Adrienne_4F
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

Re: Catalysts vs Intermediates

Postby Adrienne_4F » Wed Mar 13, 2019 8:32 pm

A catalyst is always present as a reactant first, but an intermediate comes up as product first.

Megan_Ervin_1F
Posts: 78
Joined: Fri Sep 28, 2018 12:18 am

Re: Catalysts vs Intermediates

Postby Megan_Ervin_1F » Wed Mar 13, 2019 8:47 pm

a catalyst is not consumed in a reaction whereas an intermediate is used up in a reaction and you can cancel it out in the elementary steps. This is why it is okay to have a catalyst in your rate law as well.


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