Determination of autoprotolysis constants of ketones using hydrogen-palladium generator electrode.
A coulometric-potentiometric method for the determination of autoprotolysis constants of acetone and methyl ethyl ketone, is described. The method is based on the titration of a strong base, i.e., tetrabutylammonium hydroxide with protons obtained by anodic oxidation of hydrogen at an H(2)/pd electrode in the presence of tetrabutylammonium perchlorate as the supporting electrolyte. The titration was carried out in a galvanic cell with glass and calomel electrodes, at 25 degrees . The pK(s) value obtained for acetone and methyl ethyl ketone were 25.82 +/- 0.05 and 26.92 +/- 0.07, respectively.
Mihajlovi'c
R P
RP
Faculty of Sciences, University of Kragujevac, Kragujevac, Yugoslavia.
Dzudović
R M
RM
Vajgand
V J
VJ