Catalyst and exo vs endothermic reactions

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SophiaBarden 2E
Posts: 116
Joined: Wed Sep 30, 2020 10:07 pm

Catalyst and exo vs endothermic reactions

Postby SophiaBarden 2E » Sat Mar 13, 2021 1:21 am

I know that the increasing the temperature causes different types of reactions to favor P or R.
> Temperature increase of Exothermic causes reaction to favor Reactants
> Temperature increase of Endothermic causes reaction to favor Products
However, I was wondering if the addition of a catalyst causes a similar pattern of differences in endothermic and exothermic reactions?

Ashley Ko 3I
Posts: 114
Joined: Wed Sep 30, 2020 9:54 pm

Re: Catalyst and exo vs endothermic reactions

Postby Ashley Ko 3I » Sat Mar 13, 2021 1:27 am

Hi! I don't believe that catalysts cause a similar pattern. Catalysts only affect the rate of the reaction. Since the addition of a catalyst would not affect the equilibrium position of the reaction, neither reactants nor products would be favored by the addition/absence of a catalyst. Hope this helps!

Mikayla Kwok 3K
Posts: 109
Joined: Wed Sep 30, 2020 9:51 pm

Re: Catalyst and exo vs endothermic reactions

Postby Mikayla Kwok 3K » Sat Mar 13, 2021 1:32 am

Catalysts do not shift the equilibrium. I believe catalysts are relevant in kinetics, not thermodynamics, so they lower the activation energy but have not effect on the equilibrium.

Karen Elrayes 1L
Posts: 101
Joined: Wed Sep 30, 2020 9:45 pm

Re: Catalyst and exo vs endothermic reactions

Postby Karen Elrayes 1L » Sat Mar 13, 2021 1:36 am

Catalysts decrease the activation energy and so if you look at the nerst equation if the activation energy decreases then rate (k) increases. But it shouldn't affect the equilibrium

Matlynn Giles 2E
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Re: Catalyst and exo vs endothermic reactions

Postby Matlynn Giles 2E » Sat Mar 13, 2021 11:41 am

Catalysts do not shift the equilibrium.

Jarrett Sung 3B
Posts: 60
Joined: Wed Sep 30, 2020 9:41 pm

Re: Catalyst and exo vs endothermic reactions

Postby Jarrett Sung 3B » Sat Mar 13, 2021 10:56 pm

Catalysts don't shift the equilibrium of the reaction, but that's a great question! All the catalyst does is lower the activation energy of the reaction, both forward and reverse.

Britney Tran IJ
Posts: 103
Joined: Fri Aug 30, 2019 12:18 am

Re: Catalyst and exo vs endothermic reactions

Postby Britney Tran IJ » Sat Mar 13, 2021 10:58 pm

catalysts will not shift the equilibrium of the reaction

Ashley Wagner 2A
Posts: 66
Joined: Wed Sep 30, 2020 9:32 pm

Re: Catalyst and exo vs endothermic reactions

Postby Ashley Wagner 2A » Sat Mar 13, 2021 10:59 pm

Since catalyst are a part of kinetics, they only affect the rate of the reaction so the equilibrium shouldn’t be affected.


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