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.
Silver sulfide.
Properties
It is a black solid. It reacts with acids. It is heavy. It can irritate the skin.
Occurrence and preparation
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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.