Ethanol Is Being Promoted as Renewable Biofuel A) - 1,280 KJ/mol
B) - 400 KJ/mol
C)

question 1

Multiple Choice

Ethanol is being promoted as renewable biofuel. Use the standard enthalpies of formation below to determine the standard enthalpy of combustion of ethanol. $$\begin{array} { | c | c | } \hline \text { Substance } & \mathbf { \Delta H } \\& \circ \\& \mathrm { f } \\& \text { in kJ/mol } \\\hline \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { OH } ( l ) & - 277 \\\hline \mathrm { CO } _ { 2 } ( g ) & - 394 \\\hline \mathrm { H } _ { 2 } \mathrm { O } ( l ) & - 286 \\\hline\end{array}$$

• A) - 1,280 kJ/mol
• B) - 400 kJ/mol
• C) + 400 kJ/mol
• D) - 1,430 kJ/mol
• E) - 1,370 kJ/mol

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