The Thermodynamic Properties of Gaseous Sulfur Trioxide

Autor:	W. H. Stockmayer, H. S. Mickley, G. M. Kavanagh
Rok vydání:	1944
Předmět:	chemistry.chemical_compound chemistry Standard molar entropy Sulfur trioxide General Physics and Astronomy Thermodynamics Physical chemistry Thermodynamic databases for pure substances Physical and Theoretical Chemistry Material properties Degeneracy (mathematics) Ideal gas Thermodynamic process
Zdroj:	The Journal of Chemical Physics. 12:408-412
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1723883
Popis:	The thermodynamic properties of sulfur trioxide in the ideal gas state are calculated from molecular data. To obtain satisfactory agreement with the equilibrium data for the reaction SO2+½O2=SO3, it is necessary to include vibrational anharmonicities, which are somewhat larger than usual because of an accidental degeneracy involving two of the normal frequencies. The standard entropy of SO3(g) at 25°C is 61.2±0.2 E.U., and its standard heat and free energy of formation from the elements are ΔH°298.16=−94.43±0.15 and ΔF°298.16=−88.48±0.20 kcal./mole.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f4aadbdd446b1abe895df62b3459b88 https://doi.org/10.1063/1.1723883 Zobrazit plný text záznamu