When hydrogen chloride gas comes in contact with ammonia gas, it produces a

JAMB Chemistry 2023 87 views

When hydrogen chloride gas comes in contact with ammonia gas, it produces a

  1. dense white fume of ammonium chloride ✓
  2. dense red fume of ammonium chloride
  3. dense green fume of ammonium chloride
  4. dense blue fume of ammonium chloride

Explanation

Hydrogen chloride and ammonia gases react instantly when they meet, forming solid ammonium chloride particles. These fine white particles appear as dense white fumes or smoke.

The reaction is: HCl + NH₃ → NH₄Cl. The product is a white salt that forms as tiny crystals suspended in air.

This dramatic reaction is used to detect both gases in laboratories. The thick white cloud forms immediately wherever the two gases come into contact.

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