what is the difference between the volume of edta used to titrate the sample and the volume of edta that reacted with the blank? quilzet

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28-10-2022
Chemistry

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what is the difference between the volume of edta used to titrate the sample and the volume of edta that reacted with the blank? quilzet

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jaspreetsharma jaspreetsharma · Answer 1 · 2022-11-01T12:21:34+01:00

The most prevalent indicators used in complexometric titrations are organic dyes, which work by generating a clouded complex with the metal ion under test.

The indicator is replaced by EDTA during the reaction to create a more stable complex with the metal, and after the reaction is finished, the colour is changed.

The acronym EDTA stands for ethylenediaminetetraacetic acid. For the titration, an excessive amount of EDTA is used to react with the sample solution's calcium and magnesium ion titrations. When the indicator is applied, it stays blue because the EDTA has complexed with all of the Ca2+ and Mg2+ ions present for titrations.

Learn more about EDTA here

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