Apparent molar volumes, Vф, of calcium acetate (Ca(Ch3COO)2(aq)) at 273.15 to 353.15 K and pressures up to 100 MPa
| Autor: | Uysal-Ziraman Duygu, Safarov Javid T., Doğan Özkan Murat, Hassel Egon P., Uysal Bekir Zühtü |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Journal of the Serbian Chemical Society, Vol 83, Iss 9, Pp 1005-1016 (2018) |
| Druh dokumentu: | article |
| ISSN: | 0352-5139 1820-7421 08051704 |
| DOI: | 10.2298/JSC080517049U |
| Popis: | Pressure, density and temperature (p, ρ, T) data and apparent molar volumes, Vфo, of aqueous calcium acetate solutions Ca(CH3COO)2(aq) over a wide range of temperatures from 273.15 to 353.15 K, pressures up to p = 100 MPa and molalities m, of 0.04918, 0.09367, 0.23797, 0.36365, 0.85923, 1.06930, 1.35223 and 1.81668 mol⋅kg-1 of Ca(CH3COO)2 are reported. The combined expanded uncertainty of the density (ρ) measurements at the 95 % confidence level with a coverage factor of k = 2 was estimated to be Uc(ρ) = ±0.3 kg∙m‐3. The measurements were realized with an Anton Paar DMA HPM vibration tube density meter. The system was calibrated using double-distilled water, aqueous NaCl solutions, methanol, toluene and acetone. An equation of state for fitting of the (p, ρ, T) data of aqueous calcium acetate was developed as a function of pressure, temperature and molality. After a thorough analysis of literature values and validity of the constructed equation of state, various thermophysical properties, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient and internal pressure at the investigated state parameter intervals were calculated. |
| Databáze: | Directory of Open Access Journals |
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