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Nessler's reagent is used to detect NH(3...

Nessler's reagent is used to detect `NH_(3)` this reagentis prepared by mixing

A

`Kl` (excess) `+HgCl_(2)+KOH`

B

`KCl+Hgl_(2)+KOH`

C

`Kl` (excess) `+HgCl_(2)+NH_(4)^(+)OH^(-)`

D

`Kl` (excess) `+Hg_(2)Cl_(2)+l_(2)` solution.

Text Solution

Verified by Experts

The correct Answer is:
A
Nessler's reagent is a mixture of `K_(2)[Hgl_(4)]` and KOH.
`2Kl+HgCl_(2)to2KCl+Hgl_(2)`
`Hgl_(2)+2KltoK_(2)[Hgl_(4)]overset(+KOH)to` Nessler's reagent.
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