Why copper utensils kept expose to air turn green ? What is the chemical equation behind it? Please write a chemical equation for it.

1 Answer
anor277
Mar 15, 2018

Give them a good clean....

Explanation:

The green patina is known as #"verdigris"#...

Verdigris is the greenish patina that copper acquires under oxidation in a saline environment. If you ever see the Statue of Liberty (cast out of copper), she has a lovely chalky-green, #"verdigris"# coat.

#"2Cu(s)" + 2"H"_3"CCO"_2"H" + "O"_2"(g)" rarr "Cu(O"_2"CCH"_3)_2*"Cu(OH)"_2#

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