## Criterion for Assessing Spontaneity of a Reaction

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

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

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

Angel Gomez 1K
Posts: 36
Joined: Fri Sep 29, 2017 7:04 am

### Criterion for Assessing Spontaneity of a Reaction

Under what conditions, if any, does the sign of each of the following quantities provide a criterion for assessing the spontaneity of a reaction?
(a) $\Delta G^{\circ}< 0$; (b) $\Delta H^{\circ}$; (c) $\Delta S^{\circ}$; (d) $\Delta S^{\circ}$

Angel Gomez 1K
Posts: 36
Joined: Fri Sep 29, 2017 7:04 am

### Re: Criterion for Assessing Spontaneity of a Reaction

Sorry. The fourth letter should have been
d) $\Delta S_{total}$