Question

Gursirat saw a copper vessel is exposed to moist air in her house for long time. Due to moisture it acquires a green coating. Can you tell this coating is mixture of which two chemical substances ? ​

Answer 1

Explanation:

Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.

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