Physico-chemical properties of concentrated solutions of some tetraalkylammonium salts in formamide in the temperature range 25–80°
| Autor: | Sabino Aurelio Bufo, Mario Della Monica |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Formamide
chemistry.chemical_classification Work (thermodynamics) Range (particle radiation) General Chemical Engineering Inorganic chemistry Salt (chemistry) Atmospheric temperature range Last Concentration Metal chemistry.chemical_compound Viscosity chemistry visual_art Electrochemistry visual_art.visual_art_medium |
| Zdroj: | Electrochimica Acta. 22:1213-1218 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/0013-4686(77)80064-9 |
| Popis: | In this work density and viscosity measurements for concentrated solutions in formamide of Bu 4 NJ, Bu 4 NBr, Bu 4 NCl, Pr 4 NJ salts in the temperature range 25–80° are reported. The apparent molar volumes φν are square root linear functions of the salt concentration. The values of the partial molar volumes V 2 decrease when the concentration increases and more over are almost constant at the last concentration used. Viscosity data have been analysed using Vand—Einstein model on viscosity of rigid sphere suspensions. In the diluted solution range a different behaviour between tetraalkylammonium salt solutions and alkaline-earth metal ones is shown. This difference is interpreted by supposing that the size of alkaline, alkaline-earth metal solvated cation varies with concentration, while the size of tetraalkylammonium solvated cation is unchangeable. |
| Databáze: | OpenAIRE |
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