Question

write the chemical reaction when copper reacts with oxygen, water and carbon dioxide​

Answer 1

Answer:

Cu +O----->CuO

Cu +H2O------>CuO + H2

CuO + CO2----->CuCo3(when the copper reacts with air)

Answer 2

Answer:

(a) 2 Cu + O2 → 2 CuO

(b) Cu + H2O → CuO + H2

(c) 2Cu+ CO2 +H2O+O2→ CuCO3.Cu(OH)2

Explanation:

Reaction of Copper with Oxygen:

It is not react with ordinary dry air at room temperature.

But when it it is heated with Oxygen, it first forms Copper (I) oxide Cu2O, Then forms Copper (II) oxide CuO.

2 Cu + O2 → 2 CuO

Reaction of Copper with water:

Copper doesn't decompose water at normal temperature.

But at white heat and steam it react with it to give Copper Oxide.

Cu + H2O → CuO + H2

Action with Carbon Dioxide:

In the presence of atmospheric carbon dioxide and moisture, it forms a green layer of basic Copper Carbonate.

2Cu+ CO2 +H2O+O2 → CuCO3.Cu(OH)2