14
1
points
Be sure to answer all parts.
The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose
from corn produces ethanol, which is added to gasoline to fulfill this requirement:
C$_6$H$_{12}$O$_6$(l) $\rightarrow$ 2 C$_2$H$_5$OH(l) + 2 CO$_2$(g)
Calculate $\Delta H^\circ$, $\Delta S^\circ$ and $\Delta G^\circ$ for the reaction at 25$^\circ$C. Is the spontaneity of this reaction dependent on
temperature?
Hint
Guided Solution
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$\Delta H^\circ_{rxn}$ = ____ kJ
$\Delta S^\circ_{rxn}$ = ____ J/K
$\Delta G^\circ_{rxn}$ = ____ kJ
References
The reaction is:
$\circ$ spontaneous at all temperatures
$\circ$ nonspontaneous at all temperatures
$\circ$ spontaneous only at high temperatures
$\circ$ spontaneous only at low temperatures
$\circ$ spontaneous only in the reverse direction
