Using the following equation for the combustion of octane,calculate the heat of reaction for 100.0 g of octane.The molar mass of octane is 114.33 g/mole.
2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O ΔH°_rxn= -11018 kJ

Question

Quizplus · Accepted Answer

The heat of reaction for 100.0 g of octane is calculated by first determining the moles of octane (100.0 g / 114.33 g/mol = 0.874 moles). Since the reaction involves 2 moles of octane releasing -11018 kJ, 0.874 moles will release (0.874 / 2) * -11018 kJ = -4.82 x 10^3 kJ.

Using the Following Equation for the Combustion of Octane,calculate the Heat