Question

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Answer 1

Answer:

1)Steamy fumes of hydrogen choride gas are observed.

2)Copper reacts with cold and dilute nitric acid to yield copper nitrate, water and nitric oxide.

3Cu+(Dilute)8HNO3⟶(Copper nitrate)3Cu(NO3)2+4H2O+(Nitric oxide)2NO

The formed nitric oxide combines with the oxygen of air to give brown fumes of NO2.

2NO+O2⟶(Brown fumes)2NO2

3)oxygen gas

When sodium nitrate is heated, they form solid sodium nitrite and oxygen gas.

4)On combustion, ammonia gas burns with pale yellowish green flame

5)Hydrogen Sulphide gas

Explanation:

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