Question

What is the brown precipitate formed in when nessler's reagent reacts with sulphate ion?

Answer 1

An alkaline solution of potassium tetraiodomercurate with potassium hydroxide, Nessler's reagent is used to detect the presence of ammonia, which turns it yellow. At higher concentrations ammonia causes abrown precipitate. This reaction is actually a test for ammonium (NH4+) radical.

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