## Gibbs Free Energy

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

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

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

Jessica Helfond 2F
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Gibbs Free Energy

Could someone explain what Gibbs free energy actually is? And how does that relate to entropy and enthalpy?

michelle
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

### Re: Gibbs Free Energy

Gibbs free energy is the available energy that can do useful work. They are related by the equation delta G= delta H- T*delta S.

Andre_Galenchik_2L
Posts: 69
Joined: Fri Sep 28, 2018 12:23 am

### Re: Gibbs Free Energy

I believe that Gibbs Free Energy is a term that scientists defined based solely on enthalpy and entropy. For example, a machine cannot directly find the delta G of a reaction on its own. The machine will look at the change in enthalpy and entropy to calculate delta G.