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2134, Die Standardabweichung in der Bestimmung der pK&cS-Werte betragt 0,07 pK&-Einheiten (95% Sicherheitsschwelle) : vgl. s).

Apparent pK values (pK AcOH*) in 99.94% acetic acid/0.06% water (w/w) are determined by potentiometric titration with the aid of a semi‐automatic apparatus equipped with a glass electrode. The accuracy of a single determination is ±0.04 pK*AcOH units (standard deviation, 58 degrees of freedom). The pK AcOH* values of several bases are shown to be in linear relationship with the respective pK values in water and with the σ values of the Hammett equation.

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