Feasibility of Electrolytic Conductivity of Aqueous Solutions Using Two-Electrode System

• Published in: MĀPAN : journal of Metrology Society of India 2023-06, Vol.38 (2), p.337-341
• Main Authors: Satish, Hemavathi, A., Krishna, Anuj, Jain, Priyanka, Meena, R. S., Aloysius, R. P., Tripathy, S. Swarupa, Awana, V. P. S., Singh, Nahar, Biswas, J. C.
• Format: Article
• Language: English
• Subjects: Aqueous solutions; Electrode polarization; Electrodes; Feasibility; Mathematical and Computational Physics; Mathematical Methods in Physics; Measurement Science and Instrumentation; Numerical and Computational Physics; Original Paper; Physics; Physics and Astronomy; Potassium chloride; Reference materials; Simulation; Theoretical
• ISSN: 0970-3950; 0974-9853
• DOI: 10.1007/s12647-022-00612-y

The feasibility of electrolytic conductivity is performed using two-electrode system. A precision LCR meter is utilized to measure the ac resistance of electrolytic solution which is traceable to reference standard of impedance at CSIR-National Physical Laboratory. KCl solutions with different molality are used to establish the measurement system. The measurement of ac resistance is performed at frequencies above 10 kHz to minimize the impact of electrode polarization. Initially, the measurement setup was validated using a certified reference material. The KCl solutions with different molality are prepared gravimetrically. Thereafter, electrolytic conductivity of the aqueous solutions is computed for different molality of KCl solutions. The preliminary measurement suggested that the two-electrode system may be utilized for the measurement of electrolytic conductivity from 0.005 to 0.1 M upto 1 MHz.