Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

The pK_BH⁺ values have been obtained for seventeen acid-base equilibriums corresponding to thirteen aniline derivatives in dilute perchloric acid media in the pH region at 25 °C using the spectrophotometric technique. By revising the method of extrapolation to infinite dilution it was possible to introduce new methods for calculating pK_BH⁺ values of strong bases by means of the functions logI = f(pH) and pK_ap = f(pH). The equation - logf_BH⁺/f_B = f(pH) - has been proved to conform to a polynomial function of the third order and is applicable to each compound.