Spontaneous

[Ian Morris 3C]

What makes a reaction spontaneous, based on the value of Gibb's Free Energy.

[Ryan Narisma 4G]

Hi Ian Morris 3C! To answer your question, when the Gibbs free energy value is less than 0 (a negative value), the reaction will be spontaneous. However, spontaneity does not correlate with the time it takes for the reaction to complete. I hope this helps!

[605110118]

well good sir, if the value is negative, it is spontaneous, meaning left over NRG in the form of heat is exuded from the reaction.

[Catherine Daye 1L]

Spontaneous reactions are described as having a negative Gibbs free energy.

[Eunice Nguyen 4I]

In order to determine spontaneity based on Gibbs Free Energy:
ΔG∘<0 = spontaneous
ΔG∘<0 = not spontaneous

[Justin Sarquiz 2F]

Delta G only determines whether a reaction is spontaneous or not. It says nothing about the speed of the reaction.

[Miriam Villarreal 1J]

a spontaneous processes is one that occurs without the addition of external energy. A spontaneous process may take place quickly or slowly, because spontaneity is not related to kinetics or reaction rate.

[Hailey Kim 4G]

A reaction is spontaneous when Delta(G) is greater than 0, or a negative value. When Delta(G) is a positive value, the reaction is not spontaneous, and the reverse reaction is favored. Finally, when Delta(G) is equal to 0, the reaction is at equilibrium.

[Jainam Shah 4I]

Delta G or the change in Gibbs free energy simply states whether a reaction will be spontaneous or not. A spontaneous reaction occurs naturally without input of energy. When Gibbs Free Energy is negative the reaction will be spontaneous

[Anish Natarajan 4G]

If the Gibbs Free Energy is negative--that is, if T*DeltaS is larger than Delta H or Delta H is negative--then the reaction will be spontaneous. The inclusion of T as a variable shows that as temperature increases, all reactions eventually become spontaneous

[Hussain Chharawalla 1G]

It is also useful to note that temperature can affect the free energy in both ways either low or high temperature.

[Joshua_Chan_3K]

Gibbs free energy is negative or less than 0. Going further, this means that the reaction either has a negative change in enthalpy or positive change in entropy. The worth of the change in entropy is also directly related to temperature.

[Queena Chu 3E]

If the reaction has a negative Gibbs free energy value, then it is spontaneous.

[Gabriel Nitro 1E]

Hi,

A reaction is considered spontaneous if Delta G is negative. A nonspontaneous process is where Delta G is positive.

Hope this helps! :)

[Jason Knight - 1F]

A reaction is spontaneous or not based-on the value of Gibbs free energy. If the value is positive, the reaction is not spontaneous, but if the value is negative, the reaction is spontaneous.

[Vanshika Bhushan 1A]

When ΔH is negative and ΔS is positive, the sign of ΔG will always be negative, and the reaction will be spontaneous at all temperatures

[Samantha Lee 1A]

G < 0 : spontaneous
G > 0 : not spontaneous

This is due to

This equation uses the signs and values of H (- or +) , T (in Kelvin so always +), and S (- or +) to get the overall sign and value of G. It G is negative, the reaction is spontaneous, and if G is positive, the reaction is not spontaneous.

* Tip: remember, even if a reaction is spontaneous, that does not mean that the reaction will react quickly; it could be a slow spontaneous reaction.

[Jonathan Malau 1F]

A negative delta g indicates that the reaction is spontaneous.

[Susanna Givan 2B]

what values does enthalpy have to have in order to be spontaneous as compared to nonspontaneous

[Charmaine Ng 2D]

A negative delta G means a reaction is spontaneous!

[austin-3b]

When deltaG is negative it's spontaneous. It wants to get to a lower free energy state.