Question

when a copper vessel is exposed to moist air for long it acquires a dull green coating the green material is a mixture of​

Answer 1

Answer:

copper carbonate is the mixture

Answer 2

Explanation:

Copper vessel when it will be exposed to the moist air for long time then it will acquire a dull green coating due to the corrosion of the copper metal.

Copper when gets exposed to air and reacts with the carbon dioxide and water vapour gets oxidised and get corroded.

The chemical equation for corrosion of copper is given below :-

Cu + H2O + CO2 —> Cu(OH)2.CuCO3

This is a basic oxide, which forms a green coating over the copper metal.

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