Pharmacy Study Material

Free pharmacy material ARGENTOMETRY Introduction and Principle This titrimetric method is mainly based on the titrant used in the titration. The silver nitrate is used as the titrant which precipitates the subsequent halide. This method is similar to that of the precipitation titrations. It is mainly used for the determination of the halides and halide compounds. AgNO 3 + HX AgX + HNO 3 Theory The sample is mixed with the silver nitrate and forms the precipitate. In argentometric titrations, the sodium chloride is used as the primary standard for the standardisation of the silver nitrate. NaCl + AgNO 3 AgCl + NaNO 3 AgNO 3 + NH 4 CNS AgCNS + NH 4 NO 3 Standard solution of the silver nitrate and the primary standard is prepared. Carry out the standardisation of the silver nitrate and calculate the normality of the prepared silver nitrate solution. Then the sample solution is prepared and the sample solution is titrated with the standar...