Gravimetric titration – a low-cost, high precision alternative to volumetric titration

Abstract

In factories and in laboratories nowadays titrimetry is performed predominantly with the use of burets. In Vietnam there is almost no textbook and laboratory exercise manual of analytical  chemistry mentioning about using electronic balance in titrations and comparing analytical characteristics of this technique with the traditional one using of buret. This work compares the two techniques using technical electronic balance and using buret when paralelly titrating a permanganate solution by a Mohr salt solution. Experimental results show  that titration with a two-placed electronic balance yielded similar accuracy but better precision in shorter time, compared to using a buret. Using electronic balance also possesses several other advantages, such as low cost, safety, high mobility and ease of automation.