Silver(I) sulfide
Silver(I) sulfide, also known as silver sulfide and silver sulphide, is a chemical compound. Its chemical formula is Ag2S. It contains silver in its +1 oxidation state. It also contains sulfide ions.
Properties[change | change source]
It is a black solid. It reacts with acids. It is heavy. It can irritate the skin.
Occurrence and preparation[change | change source]
It exists in the ground as acanthite and argentite. It is also made when silver is in air containing hydrogen sulfide. The oxygen in air cannot oxidize the silver directly; the hydrogen sulfide helps it. It is the tarnish on silver items.
Uses[change | change source]
It is mostly an unwanted product when silver tarnishes.
Related pages[change | change source]
