The heat of formation of ethanol (C2H5OH) is 277 kJ/mol at 298.15 K. Calculate the heat of combustion of one mole of ethanol from the information given below, assuming that the products are CO2(g) and H2O(l).
C2H5OH −→ 2 C + 3 H2 +
1
2
O2
?H = 277 kJ/mol
C + O2 −→ CO2
?H = −393.5 kJ/mol
H2 +
1
2
O2 −→ H2O
?H = −29.4 kJ/mol