Applications of complexometric equilibria
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Answer:
Explanation:
Complexometric Titrations are useful in a couple of different fields, namely analytical chemistry and the pharmaceutical sciences. In analytical chemistry, there are direct, back, replacement, and indirect titration methods depending on what is being titrated and the goal of what concentration to determine. In the pharmaceutical sciences, complexometric titrations are used to determine the amount of metals in different formulations and also to determine the hardness of water. Analytical Uses of Complexometric Titrations1) Direct Titration-Of the analytical methods, this is the most simple. It involves the addition of EDTA to the solution being titrated until the end point is achieved. As in acid-base titrations, the indicator for this type of titration must show a clear color change in order to give successful and accurate titration data. Previous to the titration, EDTA must be standardized, and sometimes additional reagents need to be added to complete the titration. This method is successful for metals like Cu, Mn, Ca, Ba, Zn, Cd, Al, Sn, Pb, and many others. One thing to be careful of in a direct