How to obtain white precipitate from hydrogen chloride gas?

Dilute HCl does not react with nitrates but can react with silver nitrate to form a white precipitate of silver chloride.

HCl + AgNO3 → AgCl + HNO3

  • Hydrogen chloride (HCl) is a colourless gas that forms white fumes of hydrochloric acid when brought into contact with atmospheric humidity.
  • The hydrogen and the chlorine atom are connected by a covalent single bond, which is highly polar since the chlorine atom is much more electronegative than the hydrogen atom.
  • Hydrogen chloride gas can cause irritation of the eyes, skin, and respiratory tract.

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