## Special Catalysts & Reactions

Arrhenius Equation: $\ln k = - \frac{E_{a}}{RT} + \ln A$

Jasmine_Brownfield_3E
Posts: 9
Joined: Wed Sep 21, 2016 2:55 pm

### Special Catalysts & Reactions

Are there any known reactions for which a certain catalyst completely removes a pre-existing activation energy barrier?

Natassia Dunn 3G
Posts: 21
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Special Catalysts & Reactions

I'm not 100% sure, but I believe that all reactions require a minimum amount of energy, even if it is extremely small.

Theresa 1H
Posts: 10
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Special Catalysts & Reactions

I don't know any, but I think it is relative to the how much energy is needed for the reaction (if it is endothermic).

I think we only need to know that Catalyst speed up the reaction by lowering the activation energy, so that more reactant has the energy to overcome the barrier and become the product.

Chem_Mod
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Joined: Thu Aug 04, 2011 1:53 pm
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### Re: Special Catalysts & Reactions

No, you still need energy to get the catalyst to interact with the reagents so there will always be an energy barrier.