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| 1. |
EDTA is used for the estimation of (a) Na+ and K+ ions (b) Cl– and Br– ions (c) Cu2+ and Cs+ ions (d) Ca2+ and Mg2+ ions |
| Answer» OPTION dExplanation:Ethylenediaminetetraacetic acid (EDTA) is a reagent that forms edta-metal COMPLEXES with many metal ions (but not with alkali metal ions such as Na+ and K+). In alkaline conditions (PH9) it forms stable complexes with the alkaline earth metal ions Ca2+ and Mg2+. The edta reagent can be used to measure the total quantity of dissolved Ca2+ and Mg2+ ions in a water sample. Thus the total hardness of a water sample can be estimated by TITRATION with a standard solution of edta.Hence option D is correctHOPE THIS HELPS YOU¶ THANK YOU ¶∆ PLEASE MARK AS BRAINLIEST ∆ | |