Description of experiment
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Needed compounds:
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ammonia : NH3
hydroxyl amine sulfate : (NH3OH)2 SO4
silver nitrate : AgNO3
Class:
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elem=Ag,N
precipitation
Summary:
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Silver (I) does not give a precipitate with hydroxyl amine sulfate (if
concentrations are not too high), but ammonia causes formation of a
precipitate, which does not dissolve in excess ammonia.
Description:
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Add a solution of silver nitrate to a solution of hydroxyl amine sulfate:
No visible changes, the liquid remains colorless and clear.
Add some ammonia: Formation of a light brown precipitate and evolution of a
gas. Addition of much more ammonia does not cause the precipitate to dissolve.