Chemistry, asked by Sarinsiprzoomierw, 1 year ago

What type of coating is formed on copper articles when they get corroded ?

Answers

Answered by santy2

When copper articles are left exposed to air, they react with oxygen, water and carbon dioxide to form copper carbonate. The compound formed is basic copper carbonate normally referred to as malachite( Cu2(OH)2CO3). This compound is the green pigment in the eroded copper articles known as patina verdigris.

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Answered by Anonymous

Answer:

A black coating of silver sulphide is formed on silver articles when they get corroded. The silver articles react with Hydrogen Sulphide (H2S) present in air to form layer of black layer on it.

Explanation:

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