Collect. Czech. Chem. Commun. 1997, 62, 1527-1532

Heat Capacities of Some Alkyl Acetates at 295-323 K

Václav Svobodaa, Kornelia Gottmanováa, Vladimír Hyneka and Bohumír Koutekb

a Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6, Czech Republic
b Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic


Molar heat capacities Cp,m at constant atmospheric pressure have been determined with a typical uncertainty of about 0.3% for eight liquid alkyl acetates H(CH2)nOCOCH3 (n = 6-12, 14), over the temperature range 295-323 K. The Cp,m values were found to be a linear function of temperature. A comparison of experimental data with those predicted by the group additivity method demonstrated a rather limited capability of the additivity scheme to predict correctly the Cp,m values for higher (n > 10) homologues in the series.

Keywords: Heat capacity; n-Alkyl acetates.