Spontaneous?


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charlotte_jacobs_4I
Posts: 63
Joined: Fri Sep 28, 2018 12:29 am

Spontaneous?

Postby charlotte_jacobs_4I » Sun Feb 24, 2019 5:09 pm

How do you determine if Gibbs free energy is spontaneous or not?

Anita Wong 1H
Posts: 68
Joined: Fri Sep 28, 2018 12:27 am
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Re: Spontaneous?

Postby Anita Wong 1H » Sun Feb 24, 2019 5:10 pm

when its negative its spontaneous. when its positive its not spontaneous.

Kriti Goyal 4K 19
Posts: 32
Joined: Fri Sep 28, 2018 12:21 am

Re: Spontaneous?

Postby Kriti Goyal 4K 19 » Sun Feb 24, 2019 5:21 pm

you look at the change in Gibbs Free Energy (Delta G). if the value is negative, it is a spontaneous reaction, also called exergonic. if it has a positive value it is not spontaneous, also called endergonic.

Porus_Karwa_2E
Posts: 72
Joined: Fri Sep 28, 2018 12:24 am

Re: Spontaneous?

Postby Porus_Karwa_2E » Sun Feb 24, 2019 5:26 pm

If the change in DeltaG is negative then the forward reaction will be spontaneous, but if deltaG is positive then the reverse reaction is spontaneous.

Ethan Yi 1K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Spontaneous?

Postby Ethan Yi 1K » Sun Feb 24, 2019 5:56 pm

its not that gibbs free energy is negative or positive, but the change in Gibbs tells us if the reaction is spontaneous is not. negative delta G is spontaneous.

RachelCheung1A
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

Re: Spontaneous?

Postby RachelCheung1A » Sun Feb 24, 2019 6:48 pm

If the change in Gibbs free energy is negative, then it it spontaneous

Eva Guillory 2E
Posts: 44
Joined: Fri Sep 28, 2018 12:22 am

Re: Spontaneous?

Postby Eva Guillory 2E » Sun Feb 24, 2019 7:46 pm

Here is a table that might help:
Image


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