Spontaneity

$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$

Jesse_torres2H
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Spontaneity

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

Christy Lee 2H
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Re: Spontaneity

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

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

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

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

Cristina Sarmiento 1E
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Re: Spontaneity

Negative delta G means the reaction is spontaneous.

Alejandra Rios 1L
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Re: Spontaneity

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

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

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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Re: Spontaneity

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