Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements
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2022
Authors
Ivanović, TijanaPopović, Daniela Ž.

Miladinović, Jelena

Miladinović, Zoran P.
Pastor, Ferenc

Article (Published version)

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Zero-current cell potential measurements were used to determine the solution activity coefficient in a ternary system {yKCl + (1 - y) KH2PO4}(aq) at temperature T = 298.15 K. The cell of the type K-ISE|KCl(mKCl), KH2PO4(mKH2PO4)|Ag|AgCl was used in the total ionic strength range, Im = 0.0886-1.0046 mol kg-1. In order to generate a set of parameters that can be applied in a wide range of mixed solution ionic strengths, the Pitzer, Scatchard, and Clegg-Pitzer-Brimblecombe models were used to fit all available experimental data, including cell potential and isopiestic measurements from the literature. The experimental and calculated values of thermodynamic properties for the studied system are in excellent agreement. Potential interactions and solution structure were discussed by means of the excess free energy of mixing via potential pairs, triplets, or quads for the investigated solution using the Scatchard model mixing parameters.
Source:
Journal of Chemical and Engineering Data, 2022Publisher:
- American Chemical Society
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-200053)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-200287)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200051 (Institute of General and Physical Chemistry, Belgrade) (RS-200051)
Institution/Community
Inovacioni centarTY - JOUR AU - Ivanović, Tijana AU - Popović, Daniela Ž. AU - Miladinović, Jelena AU - Miladinović, Zoran P. AU - Pastor, Ferenc PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5863 AB - Zero-current cell potential measurements were used to determine the solution activity coefficient in a ternary system {yKCl + (1 - y) KH2PO4}(aq) at temperature T = 298.15 K. The cell of the type K-ISE|KCl(mKCl), KH2PO4(mKH2PO4)|Ag|AgCl was used in the total ionic strength range, Im = 0.0886-1.0046 mol kg-1. In order to generate a set of parameters that can be applied in a wide range of mixed solution ionic strengths, the Pitzer, Scatchard, and Clegg-Pitzer-Brimblecombe models were used to fit all available experimental data, including cell potential and isopiestic measurements from the literature. The experimental and calculated values of thermodynamic properties for the studied system are in excellent agreement. Potential interactions and solution structure were discussed by means of the excess free energy of mixing via potential pairs, triplets, or quads for the investigated solution using the Scatchard model mixing parameters. PB - American Chemical Society T2 - Journal of Chemical and Engineering Data T1 - Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements DO - 10.1021/acs.jced.2c00704 ER -
@article{ author = "Ivanović, Tijana and Popović, Daniela Ž. and Miladinović, Jelena and Miladinović, Zoran P. and Pastor, Ferenc", year = "2022", abstract = "Zero-current cell potential measurements were used to determine the solution activity coefficient in a ternary system {yKCl + (1 - y) KH2PO4}(aq) at temperature T = 298.15 K. The cell of the type K-ISE|KCl(mKCl), KH2PO4(mKH2PO4)|Ag|AgCl was used in the total ionic strength range, Im = 0.0886-1.0046 mol kg-1. In order to generate a set of parameters that can be applied in a wide range of mixed solution ionic strengths, the Pitzer, Scatchard, and Clegg-Pitzer-Brimblecombe models were used to fit all available experimental data, including cell potential and isopiestic measurements from the literature. The experimental and calculated values of thermodynamic properties for the studied system are in excellent agreement. Potential interactions and solution structure were discussed by means of the excess free energy of mixing via potential pairs, triplets, or quads for the investigated solution using the Scatchard model mixing parameters.", publisher = "American Chemical Society", journal = "Journal of Chemical and Engineering Data", title = "Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements", doi = "10.1021/acs.jced.2c00704" }
Ivanović, T., Popović, D. Ž., Miladinović, J., Miladinović, Z. P.,& Pastor, F.. (2022). Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements. in Journal of Chemical and Engineering Data American Chemical Society.. https://doi.org/10.1021/acs.jced.2c00704
Ivanović T, Popović DŽ, Miladinović J, Miladinović ZP, Pastor F. Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements. in Journal of Chemical and Engineering Data. 2022;. doi:10.1021/acs.jced.2c00704 .
Ivanović, Tijana, Popović, Daniela Ž., Miladinović, Jelena, Miladinović, Zoran P., Pastor, Ferenc, "Activity Coefficients of the System { yKCl + (1 - y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements" in Journal of Chemical and Engineering Data (2022), https://doi.org/10.1021/acs.jced.2c00704 . .