Spontaneous vs Not Spontaneous






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Mona El Masri 1F
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Joined: Fri Sep 28, 2018 12:20 am

Spontaneous vs Not Spontaneous

Postby Mona El Masri 1F » Tue Feb 19, 2019 10:30 pm

If the Gibbs Free Energy of the reaction is positive, does that always mean the reaction is not spontaneous? In other words, does it have to be negative to be spontaneous?

Reva Kakaria 1J
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Joined: Fri Sep 28, 2018 12:23 am
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Re: Spontaneous vs Not Spontaneous

Postby Reva Kakaria 1J » Tue Feb 19, 2019 10:32 pm

Yes, if delta G is positive, the reaction is always not spontaneous.

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

Re: Spontaneous vs Not Spontaneous

Postby Ricardo Martin 1J » Wed Feb 20, 2019 9:34 am

Yes the reaction is only spontaneous if the free energy is negative (-).

Daniel Lai
Posts: 65
Joined: Fri Sep 28, 2018 12:28 am

Re: Spontaneous vs Not Spontaneous

Postby Daniel Lai » Wed Feb 20, 2019 1:07 pm

Negative delta G is spontaneous and positive is not spontaneous

Sarah_Kang_2K
Posts: 72
Joined: Fri Sep 28, 2018 12:23 am

Re: Spontaneous vs Not Spontaneous

Postby Sarah_Kang_2K » Wed Feb 20, 2019 1:39 pm

Delta G must be negative in order for a reaction to be spontaneous.

Nico Edgar 4L
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Joined: Fri Sep 28, 2018 12:19 am

Re: Spontaneous vs Not Spontaneous

Postby Nico Edgar 4L » Wed Feb 20, 2019 2:56 pm

Gibbs free Energy is our best indicator of spontaneity. If it is negative the reaction will be spontaneous, if not it will be non-spontaneous.

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

Re: Spontaneous vs Not Spontaneous

Postby Samantha Chang 2K » Wed Feb 20, 2019 2:59 pm

Yes, when delta G is negative it is spontaneous and when delta G is positive it is not spontaneous. When delta. G is 0, it is at equilibrium.

Katelyn Pham 4E
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

Re: Spontaneous vs Not Spontaneous

Postby Katelyn Pham 4E » Wed Feb 20, 2019 3:12 pm

A spontaneous reaction must release free energy so delta G must be negative to be spontaneous.


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