Question

reaction of copper corrosion​

Answer 1

Answer:

When a copper vessel is exposed to moist air for a long time it develops a green layer on its surface. Copper corrodes by oxidation in which it reacts with oxygen in the air to form copper oxide.

Copper oxide then combines with carbon dioxide to make copper carbonate, which gives it a green colour. This process is called corrosion of copper.

The green material is a mixture of copper hydroxide (Cu(OH)2) and copper carbonate (CuCO3). The following is the reaction:

2Cu(s) + H2O(g) + CO2 + O2 → Cu(OH) 2 + CuCO3(s)

Answer 2

Answer:

When copper reacts with oxygen , then it produces copper oxide . The chemical equation of the reaction is 4cu + O2 = 2 Cu2O , and forms copper oxide . Sliver objects slowly in the air due to the presence of H2S in the air. The chemical equation of this reaction is 2Ag + O2 = Ag2O