Titration of carbonate‐bicarbonate leach solutions

Abstract The acidimetric titration as generally used in analysis of carbonate/bicarbonate was found to be inaccurate whenever the concentration ratio of carbonate to bicarbonate was very different from unity. The pH at the equivalent point for the carbonate varied over the range 7.8–9.1 as a function of the initial concentrations. These facts limit the usefulness of the acidimetric titration in this case to the determination of total alkalinity. For determination of carbonate and bicarbonate, use can be made of a graph giving iso‐pH curves as a function of carbonate‐bicarbonate concentrations.