A beaker of liquid water is saturated with carbon dioxide. There is a thin film through which water is diffusing into a pure carbon dioxide bulk gas. The diffusivity of water in carbon dioxide gas is 0.20 x 10-4 cm2/s. The film is 0.25 mm thick, and the concentration of water at the lower edge of the film is 0.65 kg/m3. The mixture concentration is 70 mol/m3.

a. Draw a diagram that shows the direction of the diffusional water flux.

b. Find the diffusional and total fluxes of the water at both sides of the film.

c. Plot the concentration profile of the water through the film.

d. Find the diffusional and total fluxes of the carbon dioxide through the film.