Calculation of Steady State Equimolar Counter Diffusion

Question

Helium and nitrogen gas are contained in a tube 8 mm in diameter and 0.2 m long at a uniform temperature of 298 K and constant pressure of 1.25 atm abs. The partial pressure of He at one end of the tube is 0.05 atm and at the other end is 0.015 atm. Calculate the following for steady-state equimolar counter diffusion:

a) Flux of He in kg mol/s m2

b) Flux of N2

c) Partial pressure of He at a point 0.1 m from either end.

Answer

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