Thermophysics of metal alkanoates III. Heat capacities and thermodynamic properties of lithium and potassium propanoates

At 298.15 K, the values of Cp, m/R, Smo/R, {Hmo - Hmo(0)}/R, and {Gmo - Hmo(0)}/RT ar 15.58, 17.13, 2588.6 K, and -8.445 for CH3CH2CO2Li(cr), and 17.30, 21.16, 3134.0 K, and -10.647 for CH3CH2CO2K(cr). The energetics and shape of the (crystal III-to-crystal II) transition at Ttrs = 255 K in the potassium compound are investigated. The lithium compound showed a (crystal II-to-crystal I) transition not far above 500 K, and fusion at 606.8 K. Relative trends in the Li, Na, and K salts are unexplained because of lack of structural information.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/24959/1/0000386.pd