Question

give reason copper articles from deposit when exposed to air​

Answer 1

❥$\huge\underline\mathfrak\red{Answer}$

When copper vessel is exposed to moist air for a long time it develops a green layer on its surface. Copper corrodes by oxidation in which it reacts with oxygen in the air to form copper oxide. Copper oxide then combines with carbon dioxide to make copper carbonate, which gives it a green colour.

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Answer 2

When copper articles are exposed to moist air for a long time, it develops a green layer on its surface. This is due to the formation of Copper carbonate

Copper corrodes by oxidation in which it reacts with oxygen in the air to form copper oxide. Further, copper oxide combines with carbon dioxide in air to form copper carbonate, which gives the articles a green color.

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