Definition of Gibbs free energy

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

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

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

Lyndon_Bui_3J
Posts: 27
Joined: Sat Jul 09, 2016 3:00 am

Definition of Gibbs free energy

I understand the calculations involved in Gibbs free energy but what is it conceptually?

Hannah_Chao_1D
Posts: 25
Joined: Wed Sep 21, 2016 3:00 pm

Re: Definition of Gibbs free energy

Gibbs free energy is the maximum nonexpansion work (inc. electrical and mechanical work) that the system can do at constant temperature and pressure. In other words, it is the measure of energy that is free to do the maximum nonexpansion work.