Question

Ammonia gas (A) is diffusing at steady-state through N2 (B) by equimolar counter-diffusion in a circular conduit 1.22 m long at 25 degrees celsius and a total pressure of 101.32 kPa absolute. The partial pressure of ammonia at the left end is 25.33 kPa and 5.066 kPa at the other end. The conduit has a diameter of 0.0305 m at the left end and tapering uniformly to 0.0610 m at the right end. The diffusivity is 0.023 x 10–4 m² /s. Calculate the rate of diffusion of ammonia.

Answer 1