1. When copper is exposed to air for a considerable time, then copper reacts slowly with the carbon dioxide and water of air to form a green coating of copper carbonate on the surface of the object.
2. The green copper carbonate is a mixture of copper carbonate and copper hydroxide, CuCO3.Cu(OH)2.
3. Since, copper is low in reactivity series, therefore the corrosion of copper metal is very slow.
2. The green copper carbonate is a mixture of copper carbonate and copper hydroxide, CuCO3.Cu(OH)2.
3. Since, copper is low in reactivity series, therefore the corrosion of copper metal is very slow.