gibbs free energy






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Ashley Bouma 1F
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

gibbs free energy

Postby Ashley Bouma 1F » Thu Feb 14, 2019 3:12 pm

I was wondering how the change in gibbs free energy relates to the spontaneity of a reaction?

105114680
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: gibbs free energy

Postby 105114680 » Thu Feb 14, 2019 3:15 pm

If it is negative, the reaction is spontaneous.

Heesu_Kim_1F
Posts: 60
Joined: Fri Sep 28, 2018 12:18 am

Re: gibbs free energy

Postby Heesu_Kim_1F » Thu Feb 14, 2019 5:47 pm

If delta G is negative, the reaction is spontaneous.
If delta G is positive, the reaction is not spontaneous.
Hope this helps!

MadelineHlobik
Posts: 33
Joined: Fri Sep 28, 2018 12:22 am

Re: gibbs free energy

Postby MadelineHlobik » Thu Feb 14, 2019 9:25 pm

How do you calculate Gibbs free energy?

Joon Chang 2F
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

Re: gibbs free energy

Postby Joon Chang 2F » Fri Feb 15, 2019 11:05 pm

MadelineHlobik wrote:How do you calculate Gibbs free energy?


chris_tsai_4H
Posts: 52
Joined: Fri Sep 28, 2018 12:26 am

Re: gibbs free energy

Postby chris_tsai_4H » Sat Feb 16, 2019 12:01 pm

When delta G is negative, the system(reaction) is spontaneous.

KHuang1L
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

Re: gibbs free energy

Postby KHuang1L » Sat Feb 16, 2019 12:18 pm

If the change in Gibbs free energy is positive, then the reaction is not spontaneous. If the change in Gibbs free energy is negative, then the reaction is spontaneous.

MadelineHlobik
Posts: 33
Joined: Fri Sep 28, 2018 12:22 am

Re: gibbs free energy

Postby MadelineHlobik » Tue Feb 19, 2019 10:17 pm

Do spontaneous reactions have to occur quickly? Or do they just happen randomly?

lizettelopez1F
Posts: 29
Joined: Fri Sep 28, 2018 12:19 am

Re: gibbs free energy

Postby lizettelopez1F » Tue Feb 19, 2019 11:50 pm

If a reaction is spontaneous, it can either be spontaneous with all temperatures, spontaneous with low temperatures, or spontaneous with high temperatures. You can tell by looking at the values of delta H and delta S.

Ricardo Martin 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:15 am

Re: gibbs free energy

Postby Ricardo Martin 1J » Wed Feb 20, 2019 9:31 am

If free energy is negative (-) then the reaction is spontaneous and if it is positive (+) then the reaction is not spontaneous (requires energy).

Samantha Chang 2K
Posts: 69
Joined: Fri Sep 28, 2018 12:17 am

Re: gibbs free energy

Postby Samantha Chang 2K » Wed Feb 20, 2019 4:49 pm

If Gibbs Free Energy is negative, it is spontaneous.


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