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Home » The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its: (a) Oxide (b) Hydride (c) Sulphide (d) Carbonate
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its: (a) Oxide (b) Hydride (c) Sulphide (d) Carbonate
CBSE | Chemistry | Class 10 | Exercise 1 | Lakhmir Singh | Metals and Non Metals
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its: (a) Oxide (b) Hydride (c) Sulphide (d) Carbonate

Solution:

Option (c) is the answer.

When silver reacts with hydrogen sulphide gas in the air, it forms a thick layer of silver sulphide (Ag2S). The creation of a silver sulphide coating on the surface of silver jewellery or decorations causes them to become dull.

 

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