At 25°C, the standard enthalpy of combustion of gaseous propane(C3H8) is –2219.0 kJ per mole of propane, and the standard enthalpyof combustion of gaseous propylene (C3H6) is –2058.3 kJ per mole ofpropylene. What is the standard enthalpy change for the followingreaction at 25°C? C3H6(g) + H2(g) → C3H8(g) Substance ∆H°f (kJ/mol)CO2(g) –393.5 H2O(l) –285.8 a) +160.7 kJ b) –160.7 kJ c) +104.7 kJd) –20.4 kJ e) –125.1 kJ
