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

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1989 Spain, United States English Publisher:Elsevier BVJournal:The Journal of Chemical Thermodynamics, volume 21, pages 375-384 (issn: 0021-9614,

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Authors: Labban, Abdul K.; Lopez de la Fuente, F. L.; Cheda, Jose A. R.; Westrum, Jr. , Edgar F.; Fernandez-Martin, F.;

doi: 10.1016/0021-9614(89)90138-9

handle: 10261/2603 , 2027.42/28189

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

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Abstract

The 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.

Peer reviewed

Countries

Spain, United States

Related Organizations

University of Michigan–Flint
United States
Spanish National Research Council
Spain
University of Michigan–Ann Arbor
United States
University of Michigan
United States

Keywords

Chemical Thermodynamics, Heat capacity, Science, Chemical Engineering, Chemistry, Biological Chemistry, Engineering, Materials Science and Engineering, Health Sciences, Thermophysics, Thalium alkanoates, Heat Capacity

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