Question

copper vessel when left in moist air turns green due to formation of options are cucl2,cuco3,cuso4,cu(oh)2 and cuo

Answer 1

Cu(OH2) is formed when copper is left in air( which is bluish green colour)

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Answer 2

Answer:

Option C (CuOH)2

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.  

The reaction is as follows:

2Cu + H2O + CO2 + O2 →  Cu(OH)2  +  CuCO3

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