Some experimental details for potentiometric titrations

A few simple experiments will be briefly described, the performance of which will provide experience of the technique. Experiment 1 will require the use of an electronic millivoltmeter or of a pH meter which should be used in the millivolt mode this same apparatus can be used for the other experiments. If available, a commercial titrator (or auto-titrator) may be used after experience has been gained with the simple equipment, and apart from Experiment 1, many of the determinations can be performed using a potentiometer. 

Prepare solutions of acetic (ethanoic) acid and of sodium hydroxide, each 

The following general instructions are applicable to most potentiometric 

Other suggested experiments include titration of 0.05M Na2C03 with 0.1M HC1, and of 0.1M boric acid in the presence of 4 g of mannitol with O.lMNaOH. 

Experience in this kind of titration may be obtained by determining the iron(II) content of a solution by titration with a standard potassium dichromate solution. 

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