The combustion of one mole of octane,C₈H₁₈(l),in a bomb calorimeter released 5460 kJ of heat at 298 K.The products of the reaction are carbon dioxide and liquid water.What is the enthalpy change for this reaction?

Question

Quizplus · Accepted Answer

The enthalpy change for the reaction is the heat released at constant pressure, which is approximately equal to the heat released in a bomb calorimeter (constant volume) with a small correction for the work done by the system. The closest value to the heat released is -5471 kJ/mol.

The Combustion of One Mole of Octane,C8H18(l),in a Bomb Calorimeter

The Combustion of One Mole of Octane,C₈H₁₈(l),in a Bomb Calorimeter