Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements
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2023
Authors
Popović, Daniela Ž.Ivanović, Tijana G.
Miladinović, Jelena
Miladinović, Zoran P.
Pastor, Ferenc T.
Zlatić, Aleksandra
Article (Published version)
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The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq) were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| (Formula presented.) |AgCl|Ag, type was employed for the EMF measurements. The experimental results from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl + (1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with literature data. The differences in the osmotic coefficients between the estimated and experimental va...lues were negligible.
Keywords:
activity coefficients of NaCl / electromotive force measurements / mixed aqueous solution of NaCl and Na2HPO4 / Pitzer’s modelSource:
Russian Journal of Physical Chemistry A, 2023, 97, 12, 2693-2702Publisher:
- Pleiades Publishing
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200287)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-MESTD-inst-2020-200053)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200135)
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Inovacioni centarTY - JOUR AU - Popović, Daniela Ž. AU - Ivanović, Tijana G. AU - Miladinović, Jelena AU - Miladinović, Zoran P. AU - Pastor, Ferenc T. AU - Zlatić, Aleksandra PY - 2023 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6994 AB - The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq) were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| (Formula presented.) |AgCl|Ag, type was employed for the EMF measurements. The experimental results from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl + (1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with literature data. The differences in the osmotic coefficients between the estimated and experimental values were negligible. PB - Pleiades Publishing T2 - Russian Journal of Physical Chemistry A T1 - Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements EP - 2702 IS - 12 SP - 2693 VL - 97 DO - 10.1134/S0036024423120063 ER -
@article{ author = "Popović, Daniela Ž. and Ivanović, Tijana G. and Miladinović, Jelena and Miladinović, Zoran P. and Pastor, Ferenc T. and Zlatić, Aleksandra", year = "2023", abstract = "The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq) were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| (Formula presented.) |AgCl|Ag, type was employed for the EMF measurements. The experimental results from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl + (1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with literature data. The differences in the osmotic coefficients between the estimated and experimental values were negligible.", publisher = "Pleiades Publishing", journal = "Russian Journal of Physical Chemistry A", title = "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements", pages = "2702-2693", number = "12", volume = "97", doi = "10.1134/S0036024423120063" }
Popović, D. Ž., Ivanović, T. G., Miladinović, J., Miladinović, Z. P., Pastor, F. T.,& Zlatić, A.. (2023). Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A Pleiades Publishing., 97(12), 2693-2702. https://doi.org/10.1134/S0036024423120063
Popović DŽ, Ivanović TG, Miladinović J, Miladinović ZP, Pastor FT, Zlatić A. Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A. 2023;97(12):2693-2702. doi:10.1134/S0036024423120063 .
Popović, Daniela Ž., Ivanović, Tijana G., Miladinović, Jelena, Miladinović, Zoran P., Pastor, Ferenc T., Zlatić, Aleksandra, "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements" in Russian Journal of Physical Chemistry A, 97, no. 12 (2023):2693-2702, https://doi.org/10.1134/S0036024423120063 . .