Spontaneity






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Jesse_torres2H
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Spontaneity

Postby Jesse_torres2H » Wed Feb 07, 2018 9:09 pm

What value indicates spontaneity is it a positive or negative delta g

Christy Lee 2H
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Re: Spontaneity

Postby Christy Lee 2H » Wed Feb 07, 2018 9:16 pm

Negative delta G is spontaneous because free energy goes from a higher energy state to a lower energy state which is favorable.

Ivy Lu 1C
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Re: Spontaneity

Postby Ivy Lu 1C » Thu Feb 08, 2018 9:48 am

A negative delta G is spontaneous because there is a lost in free energy, and going from high free energy to low free energy is favorable. A positive delta G is nonspontaneous because there is a gain in free energy. For that to happen, energy would have to be added, making the reaction nonspontaneous.

Amanda Wu 2C
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Re: Spontaneity

Postby Amanda Wu 2C » Thu Feb 08, 2018 1:22 pm

A negative delta G indicates that a reaction/process is spontaneous or favorable. This is due to the fact that a negative delta G indicates a loss of free energy (going from a higher free energy of the reactants to a lower free energy of the products), which is a favorable process.

Abby Ellstrom 1I
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Re: Spontaneity

Postby Abby Ellstrom 1I » Thu Feb 08, 2018 6:09 pm

Negative delta G signifies spontaneity while positive delta G reactions are not spontaneous.

Cristina Sarmiento 1E
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Re: Spontaneity

Postby Cristina Sarmiento 1E » Thu Feb 08, 2018 8:58 pm

Negative delta G means the reaction is spontaneous.

Alejandra Rios 1L
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Re: Spontaneity

Postby Alejandra Rios 1L » Thu Feb 08, 2018 9:17 pm

A -ΔG indicates that the reaction is spontaneous and exothermic, while a +ΔG indicates that the reaction is non spontaneous and endothermic. However, when dealing with a +ΔG we can say that the reverse reaction is favored since it is spontaneous in the reverse direction

Jeremiah Samaniego 2C
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Re: Spontaneity

Postby Jeremiah Samaniego 2C » Thu Feb 08, 2018 9:18 pm

When delta G is negative, the process is spontaneous. When delta G is positive, the forward process is not spontaneous, but the reverse process is spontaneous.

Christy Zhao 1H
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Re: Spontaneity

Postby Christy Zhao 1H » Thu Feb 08, 2018 11:07 pm

On page 348 of the textbook, there is a helpful diagram that shows that a negative change in Gibbs free energy is spontaneous.

CalebBurns3L
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Joined: Fri Sep 29, 2017 7:07 am

Re: Spontaneity

Postby CalebBurns3L » Fri Feb 09, 2018 2:31 am

Negative Delta G means spontaneous because energy is leaving the system.


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