Question

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what happens when a copper vessel is exposed in moist air​

Answer 1

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copper gets corroded when it is exposed in moist air

Answer 2

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When a 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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