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Nessler's reagent is used to detect...

Nessler's reagent is used to detect

A

`CrO_(4)^(2-)`

B

`CdSO_(4)`

C

`PbSO_(4)`

D

`NH_(4)^(+)`

Text Solution

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The correct Answer is:
D
Nessler’s reagent gives red precipitate with `NH_(4)^(+)`
`NH_(4)Cl + 2K_(2)[Hgl_(4)] + 4KOH to underset("Iodide of Millon's base (brown ppt)")(NH_(2) - Hg - O - Hg - I + 7KI) + KCl + 3H_(2)O`
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