What is the heat of combustion for n-heptane in kJ/mol?

In the context of combustion reactions, the heat of combustion is defined as the amount of energy released when one mole of a substance is completely combusted in oxygen. For n-heptane, a hydrocarbon with the formula C7H16, the heat of combustion can be derived from experimental data or calculated based on its chemical structure and the products of its combustion, which are carbon dioxide (CO2) and water (H2O).

The value of 4,187 kJ/mol for the heat of combustion of n-heptane is based on empirical measurements that have been standardized in thermodynamic tables. This value reflects the significant energy released during the combustion process due to the strong bonds formed in the products compared to the bonds broken in the reactants. Specifically, the combustion of n-heptane involves the reaction with oxygen and the formation of stable products, resulting in a high amount of energy release.

Choosing 4,187 kJ/mol is consistent with established literature values for the heat of combustion, making it a reliable reference point for calculations related to energy content in fuels and understanding combustion efficiency in various applications. The other values presented may not be in alignment with measured or scientifically accepted figures for n-heptane.