Question

Silver vessels exposed to air turn blackish after some time. give scientific reason​

Answer 1

On exposure to air, silver articles turn blackish after some time. This is because silver undergoes corrosion when it is exposed to air containing hydrogen sulphide. Silver reacts with hydrogen sulphide in air to form a layer of silver sulphide (Ag2S), which gives blackish appearance to silver articles.

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Answer 2

silver reacts with suphur in air.

Explanation:

Silver articles become black after some time when exposed to air because silver reacts with sulphur present in the air to form a coating of silver sulphide (Ag2S).