The pKBH+ calculation of strong bases: A revision of various methods

The p K 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 p K BH + values of strong bases by means of the functions log I = f (pH) and p K ap = f (pH). The equation - log f BH + / f B = f (pH) - has been proved to conform to a polynomial function of the third order and is applicable to each compound.