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Thermodynamics of thallium alkanoates VI. Thallium(I) n-heptanoate revisited

AutorLabban, Abdul K.; López de la Fuente, F. L.; Rodríguez Cheda, José A.; Westrum, Edgar F.; Fernández Martín, Fernando
Palabras claveChemical Thermodynamics
Thalium alkanoates
Thermophysics
Heat Capacity
Fecha de publicaciónabr-1989
EditorElsevier
CitaciónThe Journal of Chemical Thermodynamics 21(4): 375-384.
<http://hdl.handle.net/2027.42/28189>
ResumenThe heat capacity of thallium(I) n-heptanoate has been remeasured on a new sample on which the preparative procedures were modified to eliminate the 1-1 (salt+acid) complex (soap) in a previously studied sample. The sub-ambient heat capacity of a new highly pure thallium(I) n-heptanoate is characterized by one set of transitions between 262 and 272 K and another transition at 301 K. The lowest transition temperature at 262.1 K has a maximum of Cp, m ~ 559R. Next, a bifurcated pair (at 268.6 and 271.4K) have Cp, m ~ 300R, and the highest transition (at 301.0 K) has a maximum Cp, m ~ 1697R. The corresponding values of ΔtrsSmo for the two sets are about 2.24R and 1.10R. At 298.15 K the values of Δ0TSmo, Δ0THmo, and Φmo(T) are 39.79R, 5979R·K, and 19.74R. Smoothed thermodynamic functions at selected temperatures are tabulated through melting.
URIhttp://www.sciencedirect.com/science/article/B6WHM-4CRHC6N-X9/2/749b801d3eef652f7417a6578f7d641e
http://hdl.handle.net/10261/2603
DOI10.1016/0021-9614(89)90138-9
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