Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K.

ABSTRACT: In this work, we present a comprehensive study of the thermodynamic properties of 3-and 4-ethoxyacetanilides. The heat capacities in crystalline, liquid, and supercooled liquid states from 80 to 475 K were obtained using adiabatic, differential scanning (DSC), and fast scanning (FSC) calorimetries. The fusion enthalpies at T_m were combined from DSC measurement results and the literature data. The fusion enthalpies at 298.15 K were evaluated in two independent ways: adjusted according to Kirchhoff's law of thermochemistry, and using Hess' law. For the latter approach, the enthalpies of the solution in DMF in crystalline and supercooled liquid states were derived. The values obtained by the two methods are consistent with each other. The standard thermodynamic functions (en

SUBMITTER: Sokolov AA 

PROVIDER: S-EPMC10609036 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature