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### Spontaneity

Posted: Wed Feb 07, 2018 9:09 pm
What value indicates spontaneity is it a positive or negative delta g

### Re: Spontaneity

Posted: 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.

### Re: Spontaneity

Posted: 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.

### Re: Spontaneity

Posted: 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.

### Re: Spontaneity

Posted: Thu Feb 08, 2018 6:09 pm
Negative delta G signifies spontaneity while positive delta G reactions are not spontaneous.

### Re: Spontaneity

Posted: Thu Feb 08, 2018 8:58 pm
Negative delta G means the reaction is spontaneous.

### Re: Spontaneity

Posted: 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

### Re: Spontaneity

Posted: 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.

### Re: Spontaneity

Posted: 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.

### Re: Spontaneity

Posted: Fri Feb 09, 2018 2:31 am
Negative Delta G means spontaneous because energy is leaving the system.