Search results

Determine the heat given off to the surroundings when 9.0 g of aluminum reacts according to the equation 2Al + Fe2O3 → Al2O3 + 2Fe, ΔH°rxn= -849 kJ/mol.

Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) + 25O2(g) → 16CO2(g) + 18H2O(l) ΔH°rxn = -11,020 kJ/mol. Given that ΔH°f[CO2(g)] = -393.5 kJ/mol and ΔH°f[H2O(l)] = -285.8 kJ/mol, calculate the standard enthalpy of formation of octane.