Which ion does not give pecipitate with NaOH solution?

but if this mixture is heated it released a gas with a strong a smell that tures red litmus blue

Answer:
Ammonium ions do not give a precipitate with sodium hydroxide. On strong heating ammonia gas is liberated which turn damp litmus blue
ions like potassium ion, and ammonium ion. acutally any other ions except for calcium, mangesium , barium, lead and silver ions.
the ammonium ion(NH4+)

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