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Catalysts

Posted: Sun Mar 08, 2020 9:56 pm
by Giselle Littleton 1F
How do catalysts lower the activation energy of the transition state?

Re: Catalysts

Posted: Sun Mar 08, 2020 10:05 pm
by Hui Qiao Wu 1I
They somehow affect the orientation of the substrate it binds to, helping it to achieve the proper orientation.

Re: Catalysts

Posted: Sun Mar 08, 2020 10:07 pm
by PranaviKolla2B
What else are the functions of catalysts, besides lowering the activation energy?

Re: Catalysts

Posted: Sun Mar 08, 2020 10:10 pm
by ABombino_2J
Lowering the activation energy and increasing the rate are the main functions of a catalyst. It’s important to note they go into the reaction and come out; in other words, they are not consumed.

Re: Catalysts

Posted: Sun Mar 08, 2020 10:16 pm
by Cole Woulbroun 1J
I am not exactly sure about a non-enzymatic catalyst's mechanism of lowering activation energy, but the principles of the two types of catalysts performing the process is likely similar. In an enzyme, the various chemical groups on the amino acids that are exposed to the substrate form non-covalent interactions with them. The formation of these temporary bonds releases energy, effectively lowering the energy of the transition state and allowing for the reaction to occur.

Re: Catalysts

Posted: Sun Mar 08, 2020 10:18 pm
by Cole Woulbroun 1J
Proper orientation also helps increase the reaction rate.

Re: Catalysts

Posted: Sun Mar 08, 2020 10:44 pm
by Nare Nazaryan 1F
PranaviKolla2B wrote:What else are the functions of catalysts, besides lowering the activation energy?

They speed up a reaction by reducing the activation energy or changing the reaction mechanism.

Re: Catalysts

Posted: Mon Mar 09, 2020 11:22 am
by 305385703
catalysts provide a different way from going to reactants to products. this way allows for the breaking and forming of bonds to require less energy, because the orientation of the reactants, intermediates and products are different than if the reaction proceeded normally.

Re: Catalysts

Posted: Mon Mar 09, 2020 11:23 am
by Elizabeth Harty 1A
providing a alternate pathway and weakening bonds