Catalysts and Reaction Pathways

Arrhenius Equation:

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Kayli Choy 2F
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Catalysts and Reaction Pathways

Postby Kayli Choy 2F » Wed Mar 11, 2020 10:07 am

I know that catalysts increase the rate of the forward reaction by providing a new pathway with a lower activation energy, but why do catalysts also increase the rate of the reverse reaction?

Izzie Capra 2E
Posts: 103
Joined: Sat Sep 07, 2019 12:19 am

Re: Catalysts and Reaction Pathways

Postby Izzie Capra 2E » Wed Mar 11, 2020 10:39 am

The catalyst essentially does the same thing for a reverse reaction. Just as a catalyst provides a new, quicker pathway for the forward reaction, it also creates a new pathway for the reverse reaction.

005391550
Posts: 103
Joined: Thu Jul 25, 2019 12:15 am

Re: Catalysts and Reaction Pathways

Postby 005391550 » Wed Mar 11, 2020 11:08 am

it helps if you look at the graph for the reaction profile. a catalyst would lower the activation energy for the whole graph so the new forward pathway and new reverse pathway look the same and both are at a lower Ea than before.

805394719
Posts: 104
Joined: Wed Sep 11, 2019 12:16 am

Re: Catalysts and Reaction Pathways

Postby 805394719 » Wed Mar 11, 2020 11:31 am

The forward and reverse reaction proceed by the same mechanism which means that if the forward reaction is facilitated, the reverse is also facilitated.

005384106
Posts: 101
Joined: Sat Aug 24, 2019 12:16 am

Re: Catalysts and Reaction Pathways

Postby 005384106 » Wed Mar 11, 2020 5:35 pm

Besides adding a catalyst, how else can you lower activation energy?

005384106
Posts: 101
Joined: Sat Aug 24, 2019 12:16 am

Re: Catalysts and Reaction Pathways

Postby 005384106 » Wed Mar 11, 2020 5:36 pm

Besides adding a catalyst, can increasing the temperature, increasing pressure, or decreasing volume speed up a reaction with the large activation energy?

vibha gurunathan 1h
Posts: 51
Joined: Mon Oct 07, 2019 12:15 am

Re: Catalysts and Reaction Pathways

Postby vibha gurunathan 1h » Wed Mar 11, 2020 9:34 pm

005384106 wrote:Besides adding a catalyst, can increasing the temperature, increasing pressure, or decreasing volume speed up a reaction with the large activation energy?

I'd assume that it would change the reaction forwards/backwards in terms of Le Chatelier's Principle? but I'm honestly not too sure how it interacts with speed and kinetics.


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