Question

"EDTA is used to estimate Ca and Mg."
Answer whether the above statement is true or false.
If true enter 1, else enter 0.

Answer 1

Ethylenediaminetetraacetic acid $\left(EDTA\right)$ is a reagent that forms EDTA-metal complexes with alkaline earth metal ions. In alkaline conditions $(pH>9)$, it forms stable complexes with the alkaline earth metal ions $C{a}^{2+}$ and $M{g}^{2+}$. The EDTA reagent can be used to measure the total quantity of dissolved $C{a}^{2+}$ and $M{g}^{2+}$ ions in a water sample. Thus, the total hardness of a water sample can be estimated by titration with a standard solution of EDTA.