Solubility and thermodynamic parameters of nicotinic acid in different solvents

Silveira, Marcel; Mayer, Diego A.; Rebelatto, Evertan A.; Araújo, Pedro Henrique Hermes de; Oliveira, J. Vladimir

doi:10.1016/j.jct.2023.107084

Cited by 7 publications

(1 citation statement)

References 33 publications

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“…It is often neglected [45][46][47], but this can lead to substantial errors [28]. When experimental ∆ l cr C A p,m at T m is available, it is frequently presumed to be temperature-independent [48,49]. There are many compounds for which such an assumption is incorrect [50].…”

Section: The Difference Between the Heat Capacities Of The Solid And ...mentioning

confidence: 99%

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

Sokolov,

Yagofarov,

Balakhontsev

et al. 2023

Molecules

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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 Tm 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 (entropy, enthalpy, and Gibbs energy) between 80 and 470 K were calculated.

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