ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

PH* values of the standard succinate buffer solution in the 50 mass % ethanol-water solvent

E. Kozáková, B. Cséfalvayová, and J. Zajacová

Department of Analytical Chemistry, Faculty of Natural Sciences, Komenský University, 842 15Bratislava

Abstract: The voltage of a cell without liquid junction consisting of hydrogen electrode, silver/silver chloride reference electrode, and standard succinate buffer solution in the 50 mass % ethanol—water solvent was measured potentiometrically. The measured values of EMF were used for calculating the conventional pa_H. values of the succinate buffer solution. By means of these values the calibration of pH-meter was performed. Furthermore, different buffer solutions and standards in the 50 mass % ethanol—water solvent were used as electrolytes in some types of Potentiometrie cells the voltage of which was measured in the working pH* scale. The calibration of the measured cell with respect to standard in the mixed solvent was compared with the calibration with respect to the pH standard in water. The pH* values from the working scales were confronted with the pH* values obtained from the concentration pH* scale.

Full paper in Portable Document Format: 363a345.pdf

Chemical Papers 36 (3) 345–351 (1982)