Analytical Chemistry of Halides

3 ANALYTICAL CHEMISTRY OF HALOGEN COMPOUNDS 8.3.1 Analytical chemistry of halides 

Since the silver halides, except AgF, are sparingly soluble, the halides can be determined by precipitation titration or gravimetrically. Among instrumental methods of analysis, ion-selective electrodes and ion chromatography are readily available. The latter is capable of estimating mixtures of anions. 

In precipitation titrations, a solution containing a precipitating ion is gradually added to a solution containing an ion which forms a sparingly soluble compound with the precipitating ion. The end-point may be detected by the formation of a coloured precipitate, by the formation of a soluble coloured compound at the equivalence point or 

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