Standard Enthalpy of Combustion

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Standard Enthalpy
Source: OpenStax Chemistry 2e

Standard Enthalpy of Combustion (OpenStax Chemistry 2e)

Standard enthalpy of combustion (ΔH°C) is the enthalpy change when 1 mole of a substance burns (combines vigorously with oxygen) under standard state conditions; it is sometimes called “heat of combustion.” For example, the enthalpy of combustion of ethanol, −1366.8 kJ/mol, is the amount of heat produced when one mole of ethanol undergoes complete combustion at 25 °C and 1 atmosphere pressure, yielding products also at 25 °C and 1 atm.

Standard Enthalpy
Enthalpies of combustion for many substances have been measured; a few of these are listed in the table above. Many readily available substances with large enthalpies of combustion are used as fuels, including hydrogen, carbon (as coal or charcoal), and hydrocarbons (compounds containing only hydrogen and carbon), such as methane, propane, and the major components of gasoline.

Related Research: Research Article: The stage analysis and countermeasures of coal spontaneous combustion based on “five stages” division

Source:

Flowers, P., Theopold, K., Langley, R., & Robinson, W. R. (2019, February 14). Chemistry 2e. Houston, Texas: OpenStax. Access for free at: https://openstax.org/books/chemistry-2e

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