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A gas mixture in a 10 mm plane at 330 K and 250 kPa is composed of 5 mol% CO2, 30 mol% C2H4, 40 mol% C2H6, 25 mol% C4H10, where only CO2 is diffusing. The partial pressure of CO2 at both ends are 15 KPa and 1.5 kPa. a) Estimate the mean diffusivity, Dam of CO2 in the gas mixture. b) Calculate the rate of mass transfer, NA of CO2 through the gas mixture. c) Analyze and discuss the effects of temperature and pressure on NA. d) If the partial pressure at both ends are 18.5 kPa and 5 KPa, calculate the drift factor and discuss its effect on NA.

- October 5, 2022 - Edwin Tunner

A gas mixture in a 10 mm plane at 330 K and 250 kPa is composed of 5 mol% CO2, 30 mol% C2H4, 40 mol% C2H6, 25 mol% C4H10, where only CO2 is diffusing. The partial pressure of CO2 at both ends are 15 KPa and 1.5 kPa.

a) Estimate the mean diffusivity, Dam of CO2 in the gas mixture.

b) Calculate the rate of mass transfer, NA of CO2 through the gas mixture.

c) Analyze and discuss the effects of temperature and pressure on NA.

d) If the partial pressure at both ends are 18.5 kPa and 5 KPa, calculate the drift factor and discuss its effect on NA.

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