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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.  Substance ΔHf in kJ/mol CH3CH2OH(l) 277CO2(g) 394H2O(l) 286\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

Correct Answer:

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