## Gibbs equilibrium

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

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

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

Marc Farah 3D
Posts: 22
Joined: Wed Sep 21, 2016 2:59 pm

### Gibbs equilibrium

Are equilibrium conditions when delta G = 0 or when delta G (not) =0? Why? Also why is the system not at equilibrium if Gr doesn't equal Gp?

Eljie_2F
Posts: 19
Joined: Fri Jun 17, 2016 11:28 am

### Re: Gibbs equilibrium

Equilibrium occurs when delta G= 0. Having delta G (not)= 0 is nearly impossible. This is the equilibrium because when delta G = 0, no change in energy can occur while also being a spontaneous process. Any movement from this point will require some sort of energy. If Gr is not equal to Gp then delta G will not be 0 since delta G is the difference between the two.

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