What is #"EDTA"#?

1 Answer
anor277
Feb 20, 2017

#"EDTA"# is a so-called sequestrating agent.........

Explanation:

#"EDTA"# as a multidentate ligand, that usually reacts with a metal cation in water with 1:1 stoichiometry.

#M^(n+) + "EDTA" rarr M("EDTA")^(+n-4)+4H^+#

To perform a complexometric titration, typically the solution is buffered to give a set #pH#. Some indicating agent, usually the delightfully named #"eriochrome black T"# is also employed to signal the endpoint of the reaction.

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