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The standard molar enthalpy change is -1277.3 KJ for the combustion of ethanol
C2H5OH(g) + 3O2(g) -----------} 2CO2 (g) + 3H2O (g)
Calculate the standard enthalpy of formation for ethanol based on the following ^Hdegree f [co2 (g)]= -393.5 kj/mol
^H degree f [H2O (g)= -241.8 kj/mol
Calculate the mass of ethylene glycol (C2H6O2 - molar mass =62.07 g/mol) that must be added to 1.00 kg of ethanol (C2H5OH- molar mass =46.07 g/mol) to reduce its vapor pressure by 10.0 torr at 35 degree C. The vapor pressure of pur ethanol at 35 degree C is 100 torr.