When an aqueous solution was treated with AgNO3, a white precipitate was obtained which was soluble in
NH4OH. What did the aqueous solution contained?
options are: sulphates, chlorides, acetate and carbonate.
PLEASE HELP.
Given,
When an aqueous solution was treated with AgNO3, a white precipitate was obtained which was soluble in NH4OH.
This is the test for the presence of chloride ions in the solution. Th reaction which is occurring is as follows:
Ag+(aq) + Cl-(aq) → AgCl (s)
The white precipitate formed is the insoluble silver chloride. When NH4OH is added, ammonia takes up the silver ions from the solution, thus lowering the concentration of Ag+ ions well enough for the precipitate to dissolve.
Ag+(aq) + 2NH3(aq) ⇌ [Ag(NH3)2]+(aq)
When an aqueous solution was treated with AgNO3, a white precipitate was obtained which was soluble in NH4OH.
This is the test for the presence of chloride ions in the solution. Th reaction which is occurring is as follows:
Ag+(aq) + Cl-(aq) → AgCl (s)
The white precipitate formed is the insoluble silver chloride. When NH4OH is added, ammonia takes up the silver ions from the solution, thus lowering the concentration of Ag+ ions well enough for the precipitate to dissolve.
Ag+(aq) + 2NH3(aq) ⇌ [Ag(NH3)2]+(aq)