Using the following equation for the combustion of octane (C8H18) , calculate the heat of reaction (enthalpy change) when 100.0 g of octane C8H18 reacts with oxygen in a combustion reaction. The molar mass of octane is 114.33 g/mole.
2 C8H18 + 25O 2 ? 16 CO 2 + 18 H 2O ?H° rxn = -11018 kJ
A. -4.82 x 103 kJ
B. -4.82 kJ
C. -9.64 x 103 kJ
D. -1.26 x 104 kJ