Conductivity of Phosphoric Acid, Sodium, Potassium, and Ammonium Phosphates in Dilute Aqueous Solutions from 278.15 K to 308.15 K

Authors: Tsurko E.N.¹; Neueder R.²; Barthel J.³; Apelblat A.⁴

Source: Journal of Solution Chemistry, Volume 28, Number 8, August 1999 , pp. 973-999(27)

Publisher: Springer

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Abstract:

Precise conductivity measurements on aqueous solutions of phosphoric acid, sodium dihydrogen phosphate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, diammonium hydrogen phosphate, sodium phosphate, and potassium phosphate were performed from 5 to 35°C. Data analysis was executed by the use of the Quint–Viallard equation for unsymmetrical electrolytes. Equations are given for the concentration dependence of electrolyte and single-ion conductivities at all temperatures.

Keywords: Temperature dependence of conductivity; aqueous solutions; phosphoric acid; sodium dihydrogen phosphate; potassium dihydrogen phosphate; ammonium dihydrogen phosphate; disodium hydrogen phosphate; dipotassium hydrogen phosphate; diammonium hydrogen phosphate; sodium phosphate, potassium phosphate

Language: English

Document Type: Research article

Affiliations: 1: Department of Physical Chemistry Kharkov State University, 310077 Kharkov, Ukraine. Institut für Physikalische und Theoretische Chemie, Universität Regensburg, D-93040 Regensburg, Germany 2: Institut für Physikalische und Theoretische Chemie, Universität Regensburg, D-93040 Regens-burg, Germany 3: Institut für Physikalische und Theoretische Chemie, Universität Regensburg, D-93040 Regensburg, Germany 4: Department of Chemical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel

Publication date: 1999-08-01