Pitzer Single-Ion Activity Coefficients and pH for Aqueous Solutions of Potassium Hydrogen Phthalate in Mixtures with KCl and with NaCl at 298.15 K

1995 ◽  
Vol 40 (3) ◽  
pp. 685-691 ◽  
Author(s):  
Chee-Yan Chan ◽  
Yong-Wah Eng ◽  
Kok-Soon Eu
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Potassium Hydrogen Phthalate ◽  
Hydrogen Phthalate ◽  
Ion Activity ◽  
Potassium Hydrogen ◽  
Single Ion Activity

Single ion activity coefficients based on the electrical double-layer model. Na2SO4 aqueous solutions

1983 ◽  
Vol 28 (11) ◽  
pp. 1539-1544 ◽  
Author(s):  
Angelo Uzzo ◽  
Anna Daghetti ◽  
Sergio Trasatti
Keyword(s):  
Aqueous Solutions ◽  
Double Layer ◽  
Activity Coefficients ◽  
Electrical Double Layer ◽  
Layer Model ◽  
Ion Activity ◽  
Double Layer Model ◽  
Single Ion Activity

Activity coefficients of dipotassium phthalate and potassium hydrogen phthalate in water at 298.15K

2005 ◽  
Vol 231 (1) ◽  
pp. 114-124 ◽  
Author(s):  
António J.G. de Mendonça ◽  
Pekka M. Juusola
Keyword(s):  
Activity Coefficients ◽  
Potassium Hydrogen Phthalate ◽  
Hydrogen Phthalate ◽  
Potassium Hydrogen

scholarly journals Efficient use of ferrate(VI) in the oxidative removal of potassium hydrogen phthalate from aqueous solutions

2017 ◽  
Vol 23 (2) ◽  
pp. 129-135 ◽  
Author(s):  
Diwakar Tiwari ◽  
Lalsaimawia Sailo ◽  
Yi-Yong Yoon ◽  
Seung-Mok Lee
Keyword(s):  
Aqueous Solutions ◽  
Potassium Hydrogen Phthalate ◽  
Hydrogen Phthalate ◽  
Oxidative Removal ◽  
Potassium Hydrogen

scholarly journals New Data on Activity Coefficients of Potassium, Nitrate, and Chloride Ions in Aqueous Solutions of KNO3 and KCl by Ion Selective Electrodes

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Debasmita Dash ◽  
Shekhar Kumar ◽  
C. Mallika ◽  
U. Kamachi Mudali
Keyword(s):  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Reference Electrode ◽  
Potassium Nitrate ◽  
Chloride Ions ◽  
Ion Selective Electrodes ◽  
Ion Activity ◽  
Double Junction ◽  
Single Ion Activity

Ion selective electrodes (ISEs) are used to measure the single-ion activity coefficients in aqueous solutions of KNO3 and KCl at 298.15 K against a double-junction reference electrode. The EMF responses of ISEs up to 0.01 m are plotted to obtain the slope and intercept values. The obtained slopes and intercepts are used in Nernst equation for higher concentrated solutions for calculation of individual ion activity coefficient. The mean ionic activity coefficients are estimated from single ion activity coefficient, and the obtained results are compared with the literature values.

Complex organic guests in simple crystals: potassium hydrogen phthalate as case study

2013 ◽  
Vol 48 (10) ◽  
pp. 849-863 ◽  
Author(s):  
Bart Kahr ◽  
Theresa Bullard ◽  
Miki Kurimoto ◽  
James J. De Yoreo
Keyword(s):  
Potassium Hydrogen Phthalate ◽  
Hydrogen Phthalate ◽  
Potassium Hydrogen ◽  
Organic Guests ◽  
Complex Organic

scholarly journals Towards the Understanding of Water-in-Salt Electrolytes: Individual Ion Activities and Liquid Junction Potentials in Highly Concentrated Aqueous Solutions

2021 ◽  
Author(s):  
Damien Degoulange ◽  
Nicolas Dubouis ◽  
Alexis Grimaud
Keyword(s):  
Activity Coefficients ◽  
Operating Voltage ◽  
Redox Potentials ◽  
Liquid Junction ◽  
Nernst Potential ◽  
Concentrated Electrolytes ◽  
Ion Activity ◽  
Ion Activities ◽  
Single Ion Activity ◽  
Increased Activity

Highly concentrated electrolytes were recently proposed to improve the performances of aqueous electrochemical systems by delaying the water splitting and increasing the operating voltage for battery applications. While advances were made regarding their implementation in practical devices, debate exists regarding the physical origin for the delayed water reduction occurring at the electrode/electrolyte interface. Evidently, one difficulty resides in our lack of knowledge regarding ions activity arising from this novel class of electrolyte, it being necessary to estimate the Nernst potential of associated redox reactions such as Li<sup>+</sup> intercalation or the hydrogen evolution reaction. In this work, we first measured the potential shift of electrodes selective to either Li<sup>+</sup>, H<sup>+</sup> or Zn<sup>2+</sup> ions from diluted to highly concentrated regimes in LiCl or LiTFSI solutions. Observing similar shifts for these different cations and environments, we establish that shifts in redox potentials from diluted to highly concentrated regime originates in large from an increase junction potential, it being dependent on the ions activity coefficients that increase with concentration. While our study shows that single ion activity coefficients, unlike mean ion activity coefficients, cannot be captured by any electrochemical means, we demonstrate that protons concentration increases by approximatively two orders of magnitude from 1 mol.kg<sup>-1</sup> to 15-20 mol.kg<sup>-1</sup> solutions. Combined with the increased activity coefficients, this increases the activity of protons and thus the pH of highly concentrated solutions which appears acidic.

Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Potassium Hydrogen Phthalate C8H5KO4(s)

2010 ◽  
Vol 55 (6) ◽  
pp. 2185-2191 ◽  
Author(s):  
Yu-Xia Kong ◽  
You-Ying Di ◽  
Yan Xu ◽  
Wei-Wei Yang ◽  
Zhi-Cheng Tan
Keyword(s):  
Low Temperature ◽  
Enthalpy Of Formation ◽  
Heat Capacities ◽  
Molar Enthalpy ◽  
Potassium Hydrogen Phthalate ◽  
Standard Molar Enthalpy ◽  
Hydrogen Phthalate ◽  
Temperature Heat ◽  
Potassium Hydrogen
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