Chemistry

Give a chemical test to distinguish between the following gases:

Chlorine and nitrogen dioxide

Practical Chemistry

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Answer

Chlorine reacts with silver nitrate solution to form a white precipitate of silver chloride.

4AgNO3 [aq.] + 2Cl2 (g) ⟶ 4AgCl ↓ [curdy white ppt.] + 2N2O5 (g) + O2 (g)

Nitrogen dioxide does not react with silver nitrate solution, hence, no white precipitate is formed.

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