Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K
Само за регистроване кориснике
2020
Аутори
Ivanović, TijanaPopović, Daniela Z.
Miladinović, Jelena
Rard, Joseph A.
Miladinović, Zoran P.
Pastor, Ferenc
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well... above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.
Кључне речи:
Agueous solutions / isopiestic measurements / NaH2PO4 / Na2HPO4 / osmotic coefficients / activity coefficientsИзвор:
Journal of Chemical and Engineering Data, 2020, 65, 11, 5137-5153Издавач:
- Amer Chemical Soc, Washington
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200135 (Универзитет у Београду, Технолошко-металуршки факултет) (RS-MESTD-inst-2020-200135)
DOI: 10.1021/acs.jced.0c00281
ISSN: 0021-9568
WoS: 000592736500009
Scopus: 2-s2.0-85094616449
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Ivanović, Tijana AU - Popović, Daniela Z. AU - Miladinović, Jelena AU - Rard, Joseph A. AU - Miladinović, Zoran P. AU - Pastor, Ferenc PY - 2020 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1334 AB - Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs. PB - Amer Chemical Soc, Washington T2 - Journal of Chemical and Engineering Data T1 - Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K EP - 5153 IS - 11 SP - 5137 VL - 65 DO - 10.1021/acs.jced.0c00281 ER -
@article{ author = "Ivanović, Tijana and Popović, Daniela Z. and Miladinović, Jelena and Rard, Joseph A. and Miladinović, Zoran P. and Pastor, Ferenc", year = "2020", abstract = "Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.", publisher = "Amer Chemical Soc, Washington", journal = "Journal of Chemical and Engineering Data", title = "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K", pages = "5153-5137", number = "11", volume = "65", doi = "10.1021/acs.jced.0c00281" }
Ivanović, T., Popović, D. Z., Miladinović, J., Rard, J. A., Miladinović, Z. P.,& Pastor, F.. (2020). Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data Amer Chemical Soc, Washington., 65(11), 5137-5153. https://doi.org/10.1021/acs.jced.0c00281
Ivanović T, Popović DZ, Miladinović J, Rard JA, Miladinović ZP, Pastor F. Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data. 2020;65(11):5137-5153. doi:10.1021/acs.jced.0c00281 .
Ivanović, Tijana, Popović, Daniela Z., Miladinović, Jelena, Rard, Joseph A., Miladinović, Zoran P., Pastor, Ferenc, "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K" in Journal of Chemical and Engineering Data, 65, no. 11 (2020):5137-5153, https://doi.org/10.1021/acs.jced.0c00281 . .