## Endothermic Reactions Spontaneous

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

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

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

Julia Go 2L
Posts: 60
Joined: Sun Sep 30, 2018 12:17 am
Been upvoted: 1 time

### Endothermic Reactions Spontaneous

Is it ever possible that a endothermic reaction can be spontaneous? If so, under what circumstances?

Eshwar Venkat 1F
Posts: 32
Joined: Fri Sep 28, 2018 12:22 am

### Re: Endothermic Reactions Spontaneous

As we know, reactions where deltaG (deltaH - T*deltaS) < 0 are spontaneous. Endothermic reactions can be spontaneous if the entropy is negative, or, if the entropy is also positive, the temperature is high enough such that T*deltaS > deltaH.

Eva Guillory 2E
Posts: 44
Joined: Fri Sep 28, 2018 12:22 am

### Re: Endothermic Reactions Spontaneous

Here is a table which might help: