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| Content Provider | Springer Nature Link |
|---|---|
| Author | Korolev, V. P. Antova, O. A. Smirva, N. L. Kustov, A. V. |
| Copyright Year | 2009 |
| Abstract | The heats of solution of tetrabutylammonium bromide have been measured in mixtures of formamide (FA) with methanol (MeOH) and ethylene glycol (EG) at 313.15 K by calorimetric method. The standard enthalpies of solution in binary mixtures have been extrapolated to infinite dilution by Redlich–Rosenfeld–Meyer type equation using the literary data at 298.15 K and the present paper data at 313.15 K. The Debye–Hückel limiting law slope A $_{H}$ required for calculation of the ∆$_{sol}$ H $^{0}$ value has been obtained with application the new additive scheme of determination of the physic-chemical characteristics of binaries. The scheme is tested on the example of Bu$_{4}$NBr solutions in FA–MeOH mixture at 298.15 K. Its application yields the ∆$_{sol}$ H $^{0}$ value very closed on the ones determined with the real (non-additive) characteristics of binaries. The standard enthalpies of solution extrapolated by Redlich–Rosenfeld–Meyer type equation are in a good agreement with the ones computed in terms of the Debye–Hückel theory in the second approximation. The heat capacities characteristics of Bu$_{4}$NBr have been calculated in H$_{2}$O–FA, MeOH–FA and EG–FA mixtures using the literary and present data. The sequence of solvents H$_{2}$O > FA > EG > MeOH located on their ability to solvophobic solvation found by us earlier for enthalpic characteristics is confirmed by the ∆C $_{p}$ $^{0}$ values. The comparison of thermochemical characteristics of Bu$_{4}$NBr solutions in aqueous and non-aqueous mixtures containing FA has been carried out. The own structure of water remains in the region of small additions of formamide to co-solvents. It considerably differs the H$_{2}$O–FA mixture from the investigated non-aqueous systems. |
| Starting Page | 903 |
| Ending Page | 910 |
| Page Count | 8 |
| File Format | |
| ISSN | 13886150 |
| Journal | Journal of thermal analysis |
| Volume Number | 96 |
| Issue Number | 3 |
| e-ISSN | 15728943 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2009-07-04 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Binary solvent Enthalpy of solution Enthalpy of transfer Ethylene glycol Formamide Heat capacity of solution Methanol Tetrabutylammonium bromide Measurement Science, Instrumentation Inorganic Chemistry Polymer Sciences Analytical Chemistry Physical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Condensed Matter Physics |
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