Ethanol vapor is being absorbed from a mixture of alcohol vapor and water vapor by means of a non-volatile solvent in which alcohol is soluble but water is not. The temperature is 97°C, and the total...

Ethanol vapor is being absorbed from a mixture of alcohol vapor and water vapor by means of a non-volatile solvent in which alcohol is soluble but water is not. The temperature is 97°C, and the total pressure is 760 mm Hg. The alcohol vapor can be considered diffusing through a
film of alcohol-water vapor mixture 0.1 mm thick. The mol% of the alcohol in the vapor at the outside of the film is 80%, and that of the
inside, next to the solvent, is 10%. The diffusivity of alcohol-water vapor mixtures at 25°C and 1 atm is 0.15 cm²/s. Calculate the rate
of diffusion of alcohol vapor in kilograms per hour if the area of the film is 10m².