## 9.103

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

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

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

Emily Mei 1B
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

### 9.103

In question 9.103 it asks
A scientist proposed the following two reactions to produce ethanol, a liquid fuel:

C2H4 (g) + H20 (g) -> CH3CH2OH (l)
C2H6 (g) + H20 (g) -> CH3CH2OH (l) + H2 (g)

Assume standard-state conditions and determine if either reaction is thermodynamically spontaneous.

Does anyone know where to find the ∆G values for these compounds? I couldn't find them in any of the appendices, and the solutions manual just somehow has the numbers without doing any calculations, so I assume I should be able to look them up.

Alvin Tran 2E
Posts: 39
Joined: Fri Sep 29, 2017 7:06 am

### Re: 9.103

The values are in Appendix 2A, but you have to scroll down to the organic compounds section. It starts on page A15.

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