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Mg^(2+) can be detected and esitimated i...

`Mg^(2+)` can be detected and esitimated in hard water by titrating with `EDTA` at `pH=10` using `NH_(4)OH+NH_(4)Cl` buffer. The end point is given by the apearance of blue colour. The indicator used is

A

Solochrome black

B

Eriochrome black `T`

C

Eosin

D

Bromophenol

Text Solution

Verified by Experts

The correct Answer is:
A, B

`underset("Wine red")(Mg-In)+ EDTA overset(NH_(4)OH+NH_(4)CI)underset((pH=10))rarrMg-EDTA+underset("Blue")(In)`
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