The reagent commonly used todetermine the hardness of water titrametri

1.	The reagent commonly used todetermine the hardness of water titrametrically is:
Answer» Oxalic acid disodium SALT of EDTA sodium citrate sodium thiosulphate Solution :(b) Disodium salt of ethylene diamine TETRA acetic acid (EDTA) is used to estimate `CA^(2+) and Mg^(2+)` ions responsible for the HARDNESS of WATER volumentrically of titrametrically

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