Temat: Gibb׳s energy - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Solubility of pyrimidine derivatives in different organic solvents at different temperatures
Autorzy:: Baluja, Shipra
Powiązania:: https://bibliotekanauki.pl/articles/1190176.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: pyrimidine derivatives
Apelblat equation
Buchowski-Ksiazack λh equation
Gibb׳s energy
Opis:: The objective of this study was to measure and correlate the solubility of pyrimidine derivatives in five different solvents namely chloroform, N,N-dimethylformamide, tetrahydrofuran, 1,4-dioxane and ethyl acetate from 298.15 to 328.15 K under atmospheric pressure of 0.1 MPa using gravimetric method. The characterization of all the synthesized compounds was done by IR, NMR and mass spectra. The modified Apelblat and Buchowski-Ksiazczak λh equations were used to correlate the experimental solubility data. Using Van’t Hoff and Gibb’s equations, some thermodynamic parameters such as Gibb’s free energy, enthalpy and entropy of dissolution were evaluated from solubility data. It is found that solubility increases with temperature.
Źródło:: World Scientific News; 2016, 44; 13-34
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Chalcones: A Solubility study at different temperatures
Autorzy:: Bhalu, A. A.
Bhesaniya, K. D.
Vekariya, N. J.
Baluja, S. H.
Powiązania:: https://bibliotekanauki.pl/articles/412118.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Chloroform
dichloromethane
thermodynamic parameters
dissolution enthalpy
Gibb’s energy and en tropy
Opis:: Some new chalcones are synthesized by the condensation of aryl ketones with aromatic aldehydes and solubility of these synthesized chalcones is determined in chloroform and dichloromethane at temperatures ranging between 293.15 K and 313.15 K by gravimetric method. The experimental data was correlated well with modified Apelblat equation. Further, from the experimental solubility data, some thermodynamic parameters such as dissolution enthalpy, Gibb’s energy and entropy etc. were evaluated using van’t Hoff equation. The positive Gibb’s energy and negative entropy suggests spontaneous dissolution and more ordered structure in solution.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 12; 7-19
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

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