Bjerrum Plots

The Bjerrum plots are probably the most important graphical tools in the initial stages of titration data analysis. Since one knows how much strong acid and strong base have been added to the solution at any point and also how many dissociable protons the sample substance brings to the solution, one knows the total hydrogen ion concentration in solution, despite what equilibrium reactions are taking place. By measuring the pH (and after converting it into pcH = — log[H+]), one knows the free hydrogen ion concentration [H+]. The difference between the total and the free concentrations is equal to the concentration of the bound hydrogen ions. The latter

0 0

Post a comment