USE OF THE DENSITY-FUNCTION METHOD FOR INTERPRETING THE RESULTS OF THE POTENTIOMETRIC TITRATION OF MIXTURES OF WEAK ACIDS AND BASES

A method based on an integral representation of acid-base equilibria i n a system has been suggested for treating Lire Results of potentiomet ric titration. The integral equation has been obtained, which has been solved in terms of density functions (differential distribution funct ions of constituent concentrations of a mixture over values of dissoci ation pK), Tile values of pK and concentrations of components of the m ixture are determined using the density functions found, This method u ses no preliminary information on the qualitative and quantitative com position of the lest system. A method for solving the integral equatio n obtained is also suggested, The proposed method has been verified ex perimentally.