Description: Ammonia gas and hydrogen chloride gas are introduced at opposite ends of a long air-filled glass tube. After about 15-20 minutes a very localized cloud of white ammonium chloride forms where the two gases meet after diffusing through the air. The location is relative to the molecular masses of the two gases.

Rating:

Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry

Year or vol: 2 page: 59

Keywords: Diffusion, Graham's Law, Kinetic-Molecular Theory, Molecular Speeds