Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K
Abstract
Experimental results on isopiestic measurements for three ternary aqueous solutions of K2HPO4 with KCl, KBr, and KNO3 at T = 298.15 K were modeled with the Clegg-Pitzer-Brimblecombe equation based on mole-fraction-composition scale yielding appropriate mixing parameters, for the estimation of thermodynamic activities of solute components. The results for mean ionic activity coefficients of electrolytes in ternary solutions, calculated this way, are showing specific behavior depending on total ionic strength and ionic strength fractions of electrolytes. The activity coefficients of KCl in {yKCl + (1-y)K2HPO4}(aq) and of KBr in {yKBr + (1-y)K2HPO4}(aq) are changing consistently from the ionic strength and their ionic strength fractions contrary to activity coefficients of KNO3 in {yKNO(3) + (1-y)K2HPO4}(aq). In addition, molality of K2HPO4 aqueous saturated solution, in equilibrium with K2HPO4 center dot 3H(2)O(cr), and appropriate osmotic coefficient at T = 298.15 K, were determined by ...the isopiestic method.
Keywords:
solubility / isopiestic measurements / Clegg-Pitzer-Brimblecombe's model / activity coefficientsSource:
Russian Journal of Physical Chemistry A, 2015, 89, 13, 2339-2345Publisher:
- Maik Nauka/Interperiodica/Springer, New York
Funding / projects:
- New industrial and environmental application of chemical thermodynamics to the development of the chemical processes with multiphase and multicomponent systems (RS-MESTD-Basic Research (BR or ON)-172063)
DOI: 10.1134/S0036024415130270
ISSN: 0036-0244
WoS: 000365031800003
Scopus: 2-s2.0-84946916320
Collections
Institution/Community
Institut za opštu i fizičku hemijuTY - JOUR AU - Popović, Daniela Z. AU - Miladinović, Jelena AU - Miladinović, Zoran AU - Grujić, Snežana PY - 2015 UR - https://riofh.iofh.bg.ac.rs/handle/123456789/388 AB - Experimental results on isopiestic measurements for three ternary aqueous solutions of K2HPO4 with KCl, KBr, and KNO3 at T = 298.15 K were modeled with the Clegg-Pitzer-Brimblecombe equation based on mole-fraction-composition scale yielding appropriate mixing parameters, for the estimation of thermodynamic activities of solute components. The results for mean ionic activity coefficients of electrolytes in ternary solutions, calculated this way, are showing specific behavior depending on total ionic strength and ionic strength fractions of electrolytes. The activity coefficients of KCl in {yKCl + (1-y)K2HPO4}(aq) and of KBr in {yKBr + (1-y)K2HPO4}(aq) are changing consistently from the ionic strength and their ionic strength fractions contrary to activity coefficients of KNO3 in {yKNO(3) + (1-y)K2HPO4}(aq). In addition, molality of K2HPO4 aqueous saturated solution, in equilibrium with K2HPO4 center dot 3H(2)O(cr), and appropriate osmotic coefficient at T = 298.15 K, were determined by the isopiestic method. PB - Maik Nauka/Interperiodica/Springer, New York T2 - Russian Journal of Physical Chemistry A T1 - Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K EP - 2345 IS - 13 SP - 2339 VL - 89 DO - 10.1134/S0036024415130270 UR - conv_581 ER -
@article{ author = "Popović, Daniela Z. and Miladinović, Jelena and Miladinović, Zoran and Grujić, Snežana", year = "2015", abstract = "Experimental results on isopiestic measurements for three ternary aqueous solutions of K2HPO4 with KCl, KBr, and KNO3 at T = 298.15 K were modeled with the Clegg-Pitzer-Brimblecombe equation based on mole-fraction-composition scale yielding appropriate mixing parameters, for the estimation of thermodynamic activities of solute components. The results for mean ionic activity coefficients of electrolytes in ternary solutions, calculated this way, are showing specific behavior depending on total ionic strength and ionic strength fractions of electrolytes. The activity coefficients of KCl in {yKCl + (1-y)K2HPO4}(aq) and of KBr in {yKBr + (1-y)K2HPO4}(aq) are changing consistently from the ionic strength and their ionic strength fractions contrary to activity coefficients of KNO3 in {yKNO(3) + (1-y)K2HPO4}(aq). In addition, molality of K2HPO4 aqueous saturated solution, in equilibrium with K2HPO4 center dot 3H(2)O(cr), and appropriate osmotic coefficient at T = 298.15 K, were determined by the isopiestic method.", publisher = "Maik Nauka/Interperiodica/Springer, New York", journal = "Russian Journal of Physical Chemistry A", title = "Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K", pages = "2345-2339", number = "13", volume = "89", doi = "10.1134/S0036024415130270", url = "conv_581" }
Popović, D. Z., Miladinović, J., Miladinović, Z.,& Grujić, S.. (2015). Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K. in Russian Journal of Physical Chemistry A Maik Nauka/Interperiodica/Springer, New York., 89(13), 2339-2345. https://doi.org/10.1134/S0036024415130270 conv_581
Popović DZ, Miladinović J, Miladinović Z, Grujić S. Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K. in Russian Journal of Physical Chemistry A. 2015;89(13):2339-2345. doi:10.1134/S0036024415130270 conv_581 .
Popović, Daniela Z., Miladinović, Jelena, Miladinović, Zoran, Grujić, Snežana, "Thermodynamics of mixed and pure aqueous solutions of K2HPO4 at T=298.15 K" in Russian Journal of Physical Chemistry A, 89, no. 13 (2015):2339-2345, https://doi.org/10.1134/S0036024415130270 ., conv_581 .