What happen when a copper vessel is exposed to moist air for long? Also write the equation.

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Solution

Dear Student
Copper on exposure to moist air, gets covered with green coating of either copper carbonate or copper hydroxide.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.Copper is corroded by moist air containing acidic oxides like carbon dioxide, sulphur dioxide, etc.
2Cu + H₂O + O₂ + CO₂ --> CuCO₃+ Cu(OH)₂

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What happens when a copper vessel is exposed to moist air for a long time ?

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