Coordination CompoundHard

Question

The disodium salt of ethylenediaminetetracetic acid can be used to estimate the following ion(s) in the aqueous solution.

Options

A.Mg2+ ion
B.Co2+ ion
C.Na+ ion
D.both Mg2+ and Ca2+

Solution

EDTA forms soluble complex with Ca2+ and Mg2+ (present in hard water) and thus they can be estimated by titrating against EDTA using eriochrome black-T as indicator.

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