Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K
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....
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MDPI AG
2023-10-01
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author | Andrey A. Sokolov Mikhail I. Yagofarov Ilya S. Balakhontsev Ilyas I. Nizamov Timur A. Mukhametzyanov Boris N. Solomonov Yana N. Yurkshtovich Elena N. Stepurko |
author_facet | Andrey A. Sokolov Mikhail I. Yagofarov Ilya S. Balakhontsev Ilyas I. Nizamov Timur A. Mukhametzyanov Boris N. Solomonov Yana N. Yurkshtovich Elena N. Stepurko |
author_sort | Andrey A. Sokolov |
collection | DOAJ |
description | 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 <i>T</i><sub>m</sub> 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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language | English |
last_indexed | 2024-03-10T21:00:31Z |
publishDate | 2023-10-01 |
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series | Molecules |
spelling | doaj.art-45d152e7dc0741699e629a69931b65692023-11-19T17:31:41ZengMDPI AGMolecules1420-30492023-10-012820702710.3390/molecules28207027Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 KAndrey A. Sokolov0Mikhail I. Yagofarov1Ilya S. Balakhontsev2Ilyas I. Nizamov3Timur A. Mukhametzyanov4Boris N. Solomonov5Yana N. Yurkshtovich6Elena N. Stepurko7Department of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaDepartment of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaDepartment of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaDepartment of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaDepartment of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaDepartment of Physical Chemistry, Kazan Federal University, Kremlevskaya Str. 18, 420008 Kazan, RussiaChemistry Department, Belarusian State University, 220030 Minsk, BelarusChemistry Department, Belarusian State University, 220030 Minsk, BelarusIn 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 <i>T</i><sub>m</sub> 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.https://www.mdpi.com/1420-3049/28/20/7027adiabatic calorimetrydifferential scanning calorimetryfast scanning calorimetrysolution calorimetryheat capacityfusion enthalpy |
spellingShingle | Andrey A. Sokolov Mikhail I. Yagofarov Ilya S. Balakhontsev Ilyas I. Nizamov Timur A. Mukhametzyanov Boris N. Solomonov Yana N. Yurkshtovich Elena N. Stepurko Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K Molecules adiabatic calorimetry differential scanning calorimetry fast scanning calorimetry solution calorimetry heat capacity fusion enthalpy |
title | Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K |
title_full | Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K |
title_fullStr | Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K |
title_full_unstemmed | Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K |
title_short | Thermodynamic Properties of 3- and 4-Ethoxyacetanilides between 80 and 480 K |
title_sort | thermodynamic properties of 3 and 4 ethoxyacetanilides between 80 and 480 k |
topic | adiabatic calorimetry differential scanning calorimetry fast scanning calorimetry solution calorimetry heat capacity fusion enthalpy |
url | https://www.mdpi.com/1420-3049/28/20/7027 |
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