Question

EDTA is generally a

Answer 1

EDTA is a complexing agent (ethylene diamine tetra acetic acid). Ferdinand Munz was the first to synthesise EDTA in $1935$. The amino polycarboxylic acid is another name for EDTA. In its salt form, it is colourless and water soluble.

Complete answer:
EDTA:
$1.$ EDTA stands for ethylene diamine tetraacetic acid, which is an amine polycarboxylic acid with the molecular formula ${[C{H_2}N{(C{H_2}C{O_2}H)_2}]_2}$. It's a white solid that's extremely soluble in water and is commonly used to bind metal ions such as iron, magnesium, and calcium.
$2.$ It has four carboxyl groups and two amine groups, all of which can provide electron pairs (or Lewis bases). EDTA has the ability to transfer its six lone pairs of electrons to metal cations in order to create coordination covalent connections.
$3.$ It forms stable complexes with alkaline earth metal ions such as $C{a^{2 + }}$and $M{g^{2 + }}$ when the pH of the solution is greater than $9$ . This acidic reagent is commonly used to determine the total amount of dissolved $C{a^{2 + }}$and $M{g^{2 + }}$ ions in a solution.
$4.$ As a result, EDTA is used to determine the concentrations of $C{a^{2 + }}$and $M{g^{2 + }}$ ions in water.

Additional information:
The EDTA has the special ability to form a complex with the metals. It forms the $1:1$ metal-EDTA complexes. EDTA Binds with the metal ions to form a soluble complex of metal.

Note:
The Ethylene Diamine Tetra-Acetic acid is abbreviated as EDTA. Because it is acidic, it is entirely protonated in an acidic medium. As a result, the majority of metal-EDTA interactions favour slightly basic or basic conditions. Keep in mind that EDTA is also used in medicine to prevent blood samples from clotting as well as to eliminate excess calcium and lead from the body. This chelating chemical can also be used to prevent germs from building biofilms.