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3. A tube 1 cm in inside diameter that is 22 cm long is filled with CO2 and H2 at 2 atm total pressure and 0C. The diffusion coefficient of the CO2-H2 system under these conditions is 0.275 cm's!. If the partial pressure of CO2 is 1.5 atm at one end and 0.5 atm at the other end, find the overall rate of diffusion where half of the tube follows equimolar countercurrent diffusion and other half also follows countercurrent diffusion but with this relation, The flux of H2 (NB) = 0.85 times the flux of CO2 (NA). (12)