"Thermodynamically Stable" vs "Kinetically Stable"

[Sid Panda 3A]

What is the difference between the two?

[JonathanM]

Hey! So from what I's seen a kinetic stability is when a reaction doesn't proceed because it can't overcome the activation energy, but thermodynamic stability is when a reaction doesn't proceed because it's non-spontaneous and G is greater than zero. Hope this helps!

[Kaihan_Danesh_2J]

Being kinetically controlled means a reaction does not occur against a large activation energy barrier despite the fact that the standard gibbs free energy of the reaction is negative. A reaction that is thermodynamically stable will not occur because the gibbs free energy is positive.

[Alisa Nagashima 1B]

Dr. Lavelle used the reaction of graphite to diamond as an example. Graphite is more thermodynamically stable than diamond because the formation of graphite is more favorable than that of diamond. (negative delta G) Diamond, however, is more kinetically stable than graphite because even though the reaction (diamond to graphite) is favorable, the activation energy barrier is so large that this reaction actually occurs very very slowly to the point where it just doesn't occur.

[Kaitlyn Hernandez 3I]

A thermodynamically stable reaction has a negative delta G, meaning that its spontaneous. A thermodynamically unstable reaction has a positive delta G, meaning that its nonspontaneous.

[Mari Williams 1K]

Even though a reaction may have a negative delta G and be technically spontaneous, there is sometimes too large of an activation barrier for the reaction to actually occur. Reactions like this are kinetically stable.

[derickngo3d]

If delta G is negative, then the reaction is thermodynamically unstable.
Hope this helps!

[derickngo3d]

Kinetically stable substances cannot overcome the activation energy and cannot react.
Hope this helps!

[Valerie Tran 2B]

Kinetic stability basically occurs when the reactants react really slowly. The slower the reaction occurs, the greater the kinetic stability.

Thermodynamic stability depends on whether or not the reaction is spontaneous. This depends on the change in free energy (ΔG).

[Charlotte Adams 1A]

If you have a reaction that has a negative gibbs free energy, but the reactant does not turn into the product, then the reactant is kinetically stable

[Jerry_T]

The reactant(s) is said to be kinetically stable when the the delta G is negative but no product is formed. In this case, kinetics is controlling the reaction rather than thermodynamics because the reactions occurs very very very... very slowly.