Rational methods of presenting some themes in teaching analytical chemistry

Choosing the buffer for complex compound formation usually is carried out by empiric and experimental methods which is not rational. We tried to base the quantitative and qualitative composition of the buffer through example of photometric determination of Pd (II) with antranylphenolrothe. The substitution of unwieldy and long descriptions in the theme «The Titrimetric Methods of Analysis» in classic manuals for brief and clear tabular instructions will allow to make the material more understandable for students.