Alcohols for Use as Biofuels Can Be Produced from Glucose $\longrightarrow$

question 78

Multiple Choice

Alcohols for use as biofuels can be produced from glucose that is obtained from starch and cellulose in plants. Use the information in the table below to determine the temperature range, if any, at which this reaction is spontaneous.
C₆H₁₂O₆(s) $\longrightarrow$ 2CH₃CH₂OH(l) + 2CO₂(g) $$\begin{array} { | c | c | c | } \hline \text { Compound } & & \boldsymbol { S } ^ { \circ } \\& \Delta H _ { \mathrm { f } } ^ { \circ } & { [ \mathbf { J } / ( \mathbf { m o l } \cdot \mathbf { K } ) ] } \\\hline \text { Glucose } ( s ) & ( \mathrm { kJ } / \mathbf { m o l } ) & 212 \\\hline \text { Ethanol } ( l ) & - 1,274 & 161 \\\hline \text { Carbon dioxide } ( g ) & - 278 & 214 \\\hline\end{array}$$

• A) Reaction is spontaneous at high temperatures.
• B) Reaction is spontaneous at low temperatures.
• C) Reaction is spontaneous at all temperatures.
• D) Reaction is not spontaneous at any temperature.
• E) Whether the reaction is spontaneous or not cannot be predicted from the information provided.

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