Nessler's reagent is

Nessler's reagent is
  1. ammoniacal solution of $\mathrm{K}_{2} \mathrm{HgI}_{4}$
  2. acidic solution of $\mathrm{K}_{2} \mathrm{Hg} \mathrm{I}_{4}$
  3. alkaline solution of $\mathrm{K}_{2} \mathrm{HgI}_{4}$
  4. aqueous solution of $\mathrm{KI}$

Solution

Nessler's reagent is $\mathrm{K}_{2} \mathrm{Hgl}_{4}+\mathrm{KOH}$. It is used as a test for the presence of ammonia. *

Asked in: JEE-TOPICTESTS-CHEMISTRY

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