Reaction Profiles

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Krishil_Gandhi_1D
Posts: 27
Joined: Fri Jul 22, 2016 3:00 am

Reaction Profiles

Postby Krishil_Gandhi_1D » Mon Mar 06, 2017 8:50 pm

Hey guys,

How are we supposed to draw the reaction profile from the reaction mechanism? I understand that you can determine the number of transition states/steps from the reaction mechanism, however, how can we deduce which transition state is higher in energy or whether the delta G is negative or positive based off the reaction mechanism? I'd appreciate it if someone can explain this. Thanks in advance.

Krishil

janavi_patel_2K
Posts: 20
Joined: Wed Sep 21, 2016 2:59 pm

Re: Reaction Profiles

Postby janavi_patel_2K » Mon Mar 06, 2017 10:25 pm

I know that if the exergonic reaction is favorable and K>1, then Gibbs free energy is negative. If the endergonic reaction if favorable and K<1, then Gibbs free energy is positive.

AlyssaD_2K
Posts: 10
Joined: Fri Jul 22, 2016 3:00 am

Re: Reaction Profiles

Postby AlyssaD_2K » Mon Mar 06, 2017 10:29 pm

In addition, I would add that the slow step in the reaction is the elementary step with the highest activation energy (you can see this from the Arrhenius equation) and therefore that transition state would have the highest energy.


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