Answer to Question #338381 in General Chemistry for Jhonlo

Question

The standard enthalpy of formation, ΔH˚f of liquid ethanol, C2H5OH(l) @ 25C is -277.63 kJ/mol.  Calculate its heat of combustion at constant pressure from the given reaction, C2H5OH(l)+ 3 O2(g) → 2 CO2(g) + 3 H2O(l). ΔH˚f CO2=-393.50 kJ/mol ΔH˚fH2O= -285.84 kJ/mol

Answer 1

-1366.89 kJ/mol