Gibbs Free Energy Signs






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Beatrice Petelo 1F
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Gibbs Free Energy Signs

Postby Beatrice Petelo 1F » Sun Feb 17, 2019 12:14 am

What are the signs for gibbs free energy for both spontaneous and non-spontaneous reactions?

Ricky Ma DIS 4E
Posts: 72
Joined: Fri Sep 28, 2018 12:27 am

Re: Gibbs Free Energy Signs

Postby Ricky Ma DIS 4E » Sun Feb 17, 2019 12:17 am

a negative gibbs free energy means that it is spontaneous. A postive gibbs free energy means that it is not spontaneous.

ryanhon2H
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

Re: Gibbs Free Energy Signs

Postby ryanhon2H » Sun Feb 17, 2019 1:36 am

Negative ∆G means the forward reaction is spontaneous. Positive ∆G means the forward reaction is not spontaneous, but the reverse reaction is. If ∆G equals 0, that means the system is in equilibrium.

Nandhini_2K
Posts: 60
Joined: Fri Apr 06, 2018 11:03 am

Re: Gibbs Free Energy Signs

Postby Nandhini_2K » Sun Feb 17, 2019 4:29 am

Negative = Spontaneous
Positive = Non-Spontaneous

Alyssa Wilson 2A
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

Re: Gibbs Free Energy Signs

Postby Alyssa Wilson 2A » Sun Feb 17, 2019 8:59 am

When K=1, Gibbs free energy will =0.
When K<1, Gibbs free energy will be + and will result in a non spontaneous reaction.
When K>1, Gibbs free energy will be - and will be a spontaneous reaction.


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