DETERMINATION OF EQUILIBRIUM CONSTANTS OF PHOSPHORIC ACID FROM EXPERIMENTAL pH VALUE USING THE LEAST SQUARES METHOD II. DETERMINATION OF THE SECOND DISSOCIATION CONSTANT OF PHOSPHORIC ACID
Nguyễn Thị Thanh Mai
Vũ Thị Tình
Đào Thị Phương Diệp
Abstract
The second dissociation constant of phosphoric acid was determined from experimental pHvalues, based on iterative calculation according to the least squares method. These pH valueswere obtained from potentiometric titrations of monosodium phosphate solutions.In general, these results are in good agreement with the values in reference literature. Theprogramme was written by Pascal language.
