+1 vote
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Find the diffusivity through slab if N flux of A 4 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

(a) 2 sq.m/s

(b) 4 sq.m/s

(c) 6 sq.m/s

(d) 8 sq.m/s

I had been asked this question in an interview for job.

The above asked question is from Molecular Diffusion in Solids topic in chapter Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer

1 Answer

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by (39.8k points)
Right option is (c) 6 sq.m/s

Explanation: N flux of A= D(AB)/z * concentration difference

                              D(AB) = 6 sq.m/sec.

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