why do silver articles become black on prolonged exposure to air
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silver articles become black on prolonged exposure to air because of corrosion of silver.
In this the silver react with hydrogen sulphide to form Silver sulphide which is black in colour.
Ag (silver) +H2S gives Ag2S(black) +H2
In this the silver react with hydrogen sulphide to form Silver sulphide which is black in colour.
Ag (silver) +H2S gives Ag2S(black) +H2
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When silver objects are kept in air, they get tarnished and gradually turn black due to the formation of a thin layer of silver sulphide on their surface by action of hydrogen sulphide present in air ......
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