Ammonia gas reacts with hydrogen chloride gas in the apparatus shown. Solid ammonium chloride is formed. Which statement explains why the solid ammonium chloride forms closer to the hydrogen chloride?
- AAqueous ammonia is a base and aqueous hydrogen chloride is an acid.
- BAmmonia molecules diffuse more slowly than hydrogen chloride molecules.
- CHydrogen chloride has a greater molecular mass than ammonia.
- DOnly ammonia molecules diffuse in all directions at the same time.