Vapour In Air Diffusion

Using a small sample of the liquid in a narrow vertical tube, and observing its rate of evaporation into stream of air passed across the top of the tube can conveniently be used to study the diffusion of vapour of a volatile liquid into air. The set up consists of a glass tube placed in a water bath. A horizontal glass tube is fixed to the upper end of the tube and air is drawn through this by


Determination of the diffusion co-efficient of an organic vapour in air.
 To study the effect of temperature on diffusion co-efficient.