A liquid (A) is contained in a cylindrical vessel with air being passed over the top.
The pressure is 770 mm Hg. The diffusivity of A in air is 0.088 cm2 s‐1 and the vapour
pressure of A at the liquid surface is 23.81 mm Hg. The distance from the top of the liquid
to the top of the container is 11.14 cm and the container opening has surface area 2.29
cm2. What is the rate of evaporation of A in kmol day‐1 at 25 C?
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