Reaction Profiles

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Sakina_Qadir_3K
Posts: 10
Joined: Fri Jul 22, 2016 3:00 am

Reaction Profiles

Postby Sakina_Qadir_3K » Thu Mar 09, 2017 7:53 pm

When drawing a reaction profile, what determines whether the products are higher/lower than the reactants?

Myra Kurani 1L
Posts: 10
Joined: Fri Jul 22, 2016 3:00 am

Re: Reaction Profiles

Postby Myra Kurani 1L » Thu Mar 09, 2017 7:56 pm

The problem should specify whether the reaction is exergonic or endergonic. If it is endergonic, the reactants are less than the products. If the reaction is exergonic, the reactants are higher than the products.

Amir Patel 1G
Posts: 20
Joined: Wed Sep 21, 2016 2:59 pm

Re: Reaction Profiles

Postby Amir Patel 1G » Fri Mar 10, 2017 10:38 am

This can also be distinguished by a positive or negative standard reaction Gibbs free energy value. If this value is negative, it is a favorable exergonic reaction. If the value is positive, there is an unfavorable endergonic reaction.

ribal_daniel_3H
Posts: 13
Joined: Wed Sep 21, 2016 2:58 pm

Re: Reaction Profiles

Postby ribal_daniel_3H » Mon Mar 13, 2017 11:32 am

It's also helpful to remember that if a lot of bonds are broken, or a very strong bond is broken, theres a higher chance it's endergonic since it absorbs a lot of energy to break that bond. Therefore the products would be above the reactants.


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