Entropies and free energy functions of the gaseous molecules MX/sub n/ (3 less than or equal to n less than or equal to 6), M/sub 2/X/sub 4/, M/sub 2/X/sub 6/, M/sub 2/SO/sub 4/, and MOH calculated from a dimensinal model

Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100394a012· OSTI ID:5232491

Frurip, D J; Chatillion, C; Blander, M

A dimensional model, based on classical statistical mechanics, is tested for gaseous species of the type MX/sub n/ (3 less than or equal to n less than or equal to 6), M/sub 2/X/sub 4/, M/sub 2/X/sub 6/, M/sub 2/SO/sub 4/, and MOH (where X = F, Cl, Br, I, O, N, or S). The model allows the correlation of entropy and free energy function data by using only a characteristic size parameter such as the MX distance. Agreement with the model is sufficiently good for most stoichiometries that one can use the model to (1) point out discrepancies in the existing literature data and (2) calculate with relative accuracy the unknown thermodynamic properties of molecules. To this end we discuss molecules which warrant reinvestigation. Also we use the results of the model to calculate the previously unknown thermodynamic properties of gaseous Li/sub 2/SO/sub 4/ and Rb/sub 2/SO/sub 4/.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 5232491
• Journal Information: J. Phys. Chem.; (United States), Vol. 86:5
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LITHIUM SULFATES
MOLECULAR MODELS
THERMODYNAMIC PROPERTIES
RUBIDIUM SULFATES
BOND ANGLE
BOND LENGTHS
COMPLEXES
CORRELATION FUNCTIONS
EQUATIONS
EXPERIMENTAL DATA
GASES
HALOGENS
MATHEMATICAL MODELS
MOLECULAR STRUCTURE
MOLECULES
STATISTICAL DATA
TEMPERATURE COEFFICIENT
VERY HIGH TEMPERATURE
ALKALI METAL COMPOUNDS
DATA
DIMENSIONS
ELEMENTS
FLUIDS
FUNCTIONS
INFORMATION
LENGTH
LITHIUM COMPOUNDS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REACTIVITY COEFFICIENTS
RUBIDIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
640305* - Atomic
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400201 - Chemical & Physicochemical Properties