Chemistry 0620 · IGCSE · Diffusion

Diffusion — practice question

Ammonia gas is allowed to react with hydrogen chloride gas in the apparatus illustrated. Solid ammonium chloride forms. Which statement accounts for the solid ammonium chloride being produced closer to the hydrogen chloride?

  • AAmmonia solution is a base and hydrogen chloride solution is an acid.
  • BAmmonia molecules diffuse more slowly than hydrogen chloride molecules.
  • CHydrogen chloride has a greater molecular mass than ammonia.
  • DHydrogen chloride moves by Brownian motion.

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