Enthalpy is an essential concept in thermodynamics that characterizes the total energy of a system. The change in enthalpy (ΔH) is crucial for understanding various chemical reactions and physical ...

The standard enthalpy change, commonly represented by ΔH°, is a measure of the amount of heat absorbed or released during a chemical reaction under constant pressure at a reference temperature, ...

Aldehydes are important intermediates and products in a variety of combustion and gas-phase oxidation processes, such as in low-temperature combustion, in the atmosphere, and in interstellar media.

Thermodynamics Research Center, Applied Chemicals and Materials Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305-3337, United States *(E.P.) E-mail: ...

Gas phase standard state (298.15 K, 1 atm) structures, enthalpies of formation, and ionization energies (IEs) were calculated at the G4MP2 composite method level of theory for the parent and binary ...

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Gas phase (298.15 K, 1 atm) enthalpies of formation were calculated at the Gaussian-4 (G4) level of theory using the atomization energy approach for the proposed high energy materials ...

In combustion reactions, some substances will release more energy than others. Enthalpies of combustion can be used to compare which fuels or substances release the most energy when they are burned.