## Standard reaction Gibbs free energy

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

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

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

Semi Yoon
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

### Standard reaction Gibbs free energy

What is the different between standard reaction Gibbs free energy and and Gibbs free energy? How do we know when to use the standard cell potential for the equation for standard reaction Gibbs free energy?

Elisa Bass 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

### Re: Standard reaction Gibbs free energy

Standard Gibbs Free Energy is the value of Gibbs Free Energy at standard conditions. It does not change as the reaction proceeds, which is nice because Gibbs Free Energy does. When calculating standard Gibbs Free Energy, use standard cell potential.