Question

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

Answer 1

Okay copper when exposed in the air react and change chemically.

• Copper reacts with carbon-dioxide to give copper carbonate.
• Copper reacts with moisture to give copper hydroxide.
• Copper hydroxide and copper carbonate gives the copper its green new colour.
• The new copper carbonate and hydroxide forms on the surface of the metal.

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Answer 2

Copper reacts with carbon-dioxide to give copper carbonate.

Copper reacts with moisture to give copper hydroxide.



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