## spontaneity

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

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

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

josmit_1D
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### spontaneity

how do you know if the reaction is a spontaneous process or not?

Haley Dveirin 1E
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### Re: spontaneity

A reaction is spontaneous of S is positive and G is negative. If the product is more stable than the reactant.

VLi_2B
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### Re: spontaneity

A reaction is spontaneous if delta G is negative and is not spontaneous if delta G is positive.

Charysa Santos 4G
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### Re: spontaneity

You can tell that a reaction is spontaneous when Gibbs free energy (delta G) is negative, which means that it is releasing free energy.

WesleyWu_1C
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### Re: spontaneity

Also, to find out what delta g is and to figure out if the reaction is spontaneous, you use the equation: delta G = delta H - T(delta S).

Sidharth D 1E
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### Re: spontaneity

Also, if a question mentions that a chemical reaction is favorable, it means that the reaction is spontaneous.

KHowe_1D
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### Re: spontaneity

A spontaneous reaction will have a negative delta G. A non spontaneous reaction will have a positive delta G.

504939134
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### Re: spontaneity

It is a spontaneous reaction when delta G is negative, because it means that the free energy of the reactant is higher than the product.

005162520
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### Re: spontaneity

How is releasing free energy spontaneous ?

Jacob Villar 2C
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### Re: spontaneity

Delta G (change in Gibbs free energy) would be negative if a spontaneous reaction were to occur.

Nathan Rothschild_2D
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### Re: spontaneity

If entropy is positive, then the reaction is spontaneous. Since "(-deltaG / T) =delta S (of the universe)", if deltaS(of the universe) is positive, then deltaG is negative.

Rida Ismail 2E
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### Re: spontaneity

There’s two ways to figure this out. If the total entropy is positive then it is spontaneous. Also if the total Gibbs free energy is negative then it is also spontaneous. It is easier to tell spontaneity from gibbs free energy because it does not require us to know the entropy of the surroundings and the system it only requires us to know the entropy of the system.

505306205
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### Re: spontaneity

a reaction is spontaneous if the total entropy is positive

505306205
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### Re: spontaneity

a reaction is spontaneous if the total entropy is positive

GFolk_1D
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### Re: spontaneity

What is the significance of whether or not a reaction is spontaneous? How do we apply this is real-world situations?

Aarushi Solanki 4F
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### Re: spontaneity

A reaction is spontaneous when Gibbs Free Energy is negative.

Justin Quan 4I
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### Re: spontaneity

GFolk_1D wrote:What is the significance of whether or not a reaction is spontaneous? How do we apply this is real-world situations?

If a reaction is spontaneous, then the reaction will proceed without intervention. This applies to real-world situations since figuring out if a reaction will proceed or not is important will commercially producing chemicals and other products

Anushka Chauhan2B
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### Re: spontaneity

spontaneous if delta g is negative

Samuel Tzeng 1B
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### Re: spontaneity

if delta G is negative the reaction is spontaneous