Journal of Chemical Thermodynamics p. 537 - 546 (1999)
Update date:2022-08-30
Topics:
Della Gatta, Giuseppe
Jozwiak, Malgorzata
Ferloni, Paolo
The molar heat capacities at constant pressure Cp,m of a homologous series of alkane-α, ω-diols HO-(CH2)n-OH, where n has values of 6 and (8 to 16), were determined by using differential scanning calorimetry over the temperature range (280 to 310) K, in flowing gas. The measured values of Cp,m showed a very good linear dependence on temperature, except 1,9-nonanediol and 1,13-tridecanediol. The heat capacities at T = 298.15 K were obtained by interpolating the smoothed fitting equations as a function of temperature. The contribution to the heat capacity at T = 298.15 K of the CH2 group was derived from the slope of the Cp,m values of diols as a function of the number of carbon atoms in their molecules, and compared with the values obtained from a comprehensive collection of literature data for homologous alkyl organic compounds in the solid state. 1999 Academic Press.
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