Question

• At the bottom of a cylindrical container is n-butanol. Pure air is passed over the open top of the container. The pressure is 1 atm and the temperature is 70 °F. The diffusivity of air-n-butanol is 8.57x10-6 m2/s at the given conditions. If the surface of n-butanol is 6.0 ft below the top of the container, calculate the diffusion rate of n butanol. Vapor pressure of n-butanol is 0.009 atm at the given conditions. • [Universal gas constant = 0.08205 m3-atm/kmol-K]​

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