Gibbs free energy and K

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

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

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

J_CHEN 4I
Posts: 54
Joined: Tue Nov 14, 2017 3:01 am

Gibbs free energy and K

How does the Gibbs free energy relate to K and Q?

Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

Re: Gibbs free energy and K

The equations are on the formula sheet, but delta G = RTlnK, and u can extrapolate that out to non-standard values of delta G, which shows how Q is related as well.

AniP_2D
Posts: 95
Joined: Sat Aug 17, 2019 12:17 am

Re: Gibbs free energy and K

The two equation would be deltaG(standard)=-RTlnK and deltaG(reaction)=deltaG(standard)+RTlnQ, which as mentioned, can be found on the formula sheet.

WGaines_2E
Posts: 47
Joined: Mon Nov 18, 2019 12:18 am

dG = dG0 + RTlnQ