## Lavelle's review slides

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

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

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

JosephineF
Posts: 49
Joined: Wed Sep 18, 2019 12:17 am

### Lavelle's review slides

In Lavelle's review there is a problem talking about calculating the Gibbs free energy under non equilibrium condition and in the end $\Delta G$ is positive. The slide says that because it is positive the reaction is spontaneous. I thought in order for a reaction to be spontaneous $\Delta G$ had to be negative. Is there some other symbol that im thinking of, where negativity= spontaneity?

Joseph Saba
Posts: 154
Joined: Thu Jul 11, 2019 12:16 am

### Re: Lavelle's review slides

He's referencing deltaG overall. He used this equation to see which side (reactants or products) will be favored given the conditions. Since deltaG is positive, it isn't spontaneous but that's for the forward reaction, the reverse reaction will be spontaneous in this case.

Return to “Gibbs Free Energy Concepts and Calculations”

### Who is online

Users browsing this forum: No registered users and 1 guest