Why do copper lose shine when exposed to air
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1
Answer:
A copper vessel reacts with oxygen present in air when exposed to it , they forms copper oxide which , in turn , is a black coating over the vessel and makes the vessel to lose its shine .
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Answer:
Copper forms a green deposit on its surface when exposed to air which is usually a mixture of copper carbonate and copper hydroxide.
Explanation:
The chemical reaction is
2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3
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