the techniques described in this chapter are widely used to determine the compositions of mixtures,the concentrations of solutes,and the chemical formulas of compounds.This aspect of chemistry is called volumetric analysis, an analytic method using measurement of volume. The analysis of conposition by measuring the volume of one solution needed to react with a given volume of another solution is called titration (the name comes from the French for 'assay' or test of quality).When one solution contains a reducing agent and the other an oxidizing agent,we speak of a redox titration.