Question

Name of the suitable ligand used to determine hardness of water.

Answer 1

Explanation:

EDTA titration, permanent hardness is usually determined by taitrating it with a standard solution of ethylenediamminetetraacetic acid, EDTA. the EDTA is a complexing, or chelating agent used to capture the metal ions . this causes the water to become softened, but the metal ions are not moved from the water.