Question

Reaction of copper with moist air: Copper+ Water+ CO2+ O2 ----> Copper Hydroxide + _____________________

Copper oxide

Copper carbonate

Copper

Copper sulphate

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Answer 1

Answer:

your answer is b) copper carbonate

Explanation:

When a copper vessel is exposed to moist air for a long time it develops a green layer on its surface. Copper corrodes by oxidation in which it reacts with oxygen in the air to form copper oxide. 

Copper oxide then combines with carbon dioxide to make copper carbonate, which gives it a green colour. This process is called corrosion of copper.

The green material is a mixture of copper hydroxide (Cu(OH)2) and copper carbonate (CuCO3). The following is the reaction:

2Cu(s)+H2O(g)+CO2+O2→Cu(OH)2+CuCO3(s)

Copper(II) carbonate is a blue-green compound.

Hence, option B is correct.

hope it helps you

Answer 2

option (b)

Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color.