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Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K

Samo za registrovane korisnike
2020
Autori
Ivanović, Tijana
Popović, Daniela Z.
Miladinović, Jelena
Rard, Joseph A.
Miladinović, Zoran P.
Pastor, Ferenc
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
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.

Ključne reči:
Agueous solutions / isopiestic measurements / NaH2PO4 / Na2HPO4 / osmotic coefficients / activity coefficients
Izvor:
Journal of Chemical and Engineering Data, 2020, 65, 11, 5137-5153
Izdavač:
  • Amer Chemical Soc, Washington
Finansiranje / projekti:
  • Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 200135 (Univerzitet u Beogradu, Tehnološko-metalurški fakultet) (RS-200135)

DOI: 10.1021/acs.jced.0c00281

ISSN: 0021-9568

WoS: 000592736500009

Scopus: 2-s2.0-85094616449
[ Google Scholar ]
3
1
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1334
Kolekcije
  • Radovi istraživača / Researchers’ publications
Institucija/grupa
Institut za multidisciplinarna istraživanja
TY  - 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 . .

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