What is the green colour coating that forms on copper when it is exposed to the atmosphere?

Copper sulphate

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Copper carbonate

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Copper chloride

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Copper hydride

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Solution

The correct option is B Copper carbonate
When exposed to the atmosphere, copper forms a layer of copper carbonate which has a green shade.

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When copper vessels are exposed to moist air for a long time, a green coating is formed. Which are the constituents of the coating?
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(ii) Copper carbonate
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(a) What is the material of the green coating ?

(b) State whether the green coating is acidic or basic.

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What is the green colour coating that forms on copper when it is exposed to the atmosphere?

The correct option is B Copper carbonateWhen exposed to the atmosphere, copper forms a layer of copper carbonate which has a green shade.

The correct option is B Copper carbonate
When exposed to the atmosphere, copper forms a layer of copper carbonate which has a green shade.