Nessler’s Reagent Reaction:
\(2K_2HgI_4 + NH_3 + 3KOH \rightarrow Hg_2(NH_3)_2I_2 + 7KI + 2H_2O\)
In the reaction above, the formation of a brown precipitate is characteristic of ammonia gas (\( NH_3 \)).
The Correct Answer is: \( NH_3 \)
List - I(Test/reagent) | List - II(Radical identified) |
---|---|
(A) Lake Test | (I) NO3− |
(B) Nessler’s Reagent | (II) Fe3+ |
(C) Potassium sulphocyanide | (III) Al3+ |
(D) Brown Ring Test | (IV) NH4+ |
List - ISolid salt treated with dil. H2SO4 | List - IIAnion detected |
---|---|
(A) effervescence of colourless gas | (I) NO2− |
(B) gas with smell of rotten egg | (II) CO32− |
(C) gas with pungent smell | (III) S2− |
(D) brown fumes | (IV) SO23− |