name a solution which gives a brown colouration with ammonium salts
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❤When nessler's reagent (potassium tetraiodomercurate) in alkaline medium (KOH or NaOH) is passed through ammonia solution (ammonium hydroxide), it gives a reddish brown precipitate
✔The reaction is:
2 K2HgI4 + NH3 + 3 KOH →
NH2—Hg —O —Hg —I + 7KI + 2 H2O
This is a test for detection of ammonium ion in qualitative tests.
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