a copper vessel when exposed to moist air for long acquires a dull green coating (give reason)
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because it reacts with oxygen present in air or room temperature
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Answer:
Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.
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