## Gibbs Free Energy and Equilibrium

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

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

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

Annalyn Diaz 1J
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

### Gibbs Free Energy and Equilibrium

Why is Gibbs free energy 0 at equilibrium?

Philipp_V_Dis1K
Posts: 32
Joined: Fri Sep 28, 2018 12:20 am

### Re: Gibbs Free Energy and Equilibrium

The reaction is "at completion" so there is nothing spontaneous to drive the reaction forward or backward

Cynthia Aragon 1B
Posts: 47
Joined: Mon Apr 09, 2018 1:38 pm

### Re: Gibbs Free Energy and Equilibrium

Gibbs free energy is a measure of how much potential a reaction has left to do a "net" something . If the free energy is 0 that means the reaction has reached equilibrium and no work can be done.

Lorena Zhang 4E
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

### Re: Gibbs Free Energy and Equilibrium

When the gibbs free energy is zero, the reaction is at equilibrium because neither the forward nor the reverse reaction is favored.

katie_sutton1B
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

### Re: Gibbs Free Energy and Equilibrium

At zero, there is no more work that can be done, and the reaction does not favor either the reactants or products. Thus, it is at equilibrium.

Dong Hyun Lee 4E
Posts: 68
Joined: Fri Sep 28, 2018 12:23 am

### Re: Gibbs Free Energy and Equilibrium

There is no more "free energy" to do work because the reaction is at equilibrium and so a foward nor a backwards process is favored. Think about a ball in a valley, if the ball is on an incline, it will roll down. However if the ball is at equilibirum or the lowest point of the valley, the ball will not move anywhere.