Gibbs Free Energy calculation






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504939134
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Joined: Wed Sep 18, 2019 12:21 am

Gibbs Free Energy calculation

Postby 504939134 » Sun Feb 09, 2020 10:29 pm

Will we only be using the Gibbs change in free energy equation? And when do we know to use it instead of just G=H-TS?

Eesha Sohail 1D
Posts: 100
Joined: Sat Aug 17, 2019 12:16 am

Re: Gibbs Free Energy calculation

Postby Eesha Sohail 1D » Sun Feb 09, 2020 11:16 pm

It depends on the values/units you are given in the question. If reaction constant is given (which, probably not) then you will most likely use the other equation. However, the G = H-TS equation is definitely the most important one.

Alison Trinh 1E
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Gibbs Free Energy calculation

Postby Alison Trinh 1E » Sun Feb 09, 2020 11:37 pm

Why do we need to use the concept of Gibbs Free Energy?

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: Gibbs Free Energy calculation

Postby Ashley Fang 2G » Mon Feb 10, 2020 9:16 pm

We need to know the concept of Gibbs free energy because it tells us whether a reaction will be spontaneous or not.
If delta G is negative, the reaction is spontaneous, and the products will have less free energy than the reactants.
If delta G is positive, the reaction is NOT spontaneous, and the products will have more free energy than the reactants.


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