Explain with reason : Copper vessel acquire a dull green coating when exposed to air .
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Explanation:
it reacts with gasses and moisture in atmosphere and make a mixture of copper carbonate and copper hydroxide
Reaction
2Cu + H2O + CO2 + H2 = CuCO3 + Cu(OH)2
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Explanation:
WHEN A COPPER OBJECT REMAINS IN DAMP SIR FOR A CONSIDERABLE TIME,THEN COPPER REACTS SLOWLY WITH THE CARBON DIOXIDE AND WATER VAPOURS OF AIR TO FORM A GREEN COATING OF BASIC COPPER CARBONATE ON THE SURFACE OF THE OBJECT.
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