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in Mass Transfer by (37.1k points)
Find the diffusivity of AB in sq.m/sec if N flux of A 5 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

(a) 2.5

(b) 5.5

(c) 7.5

(d) 10.5

The question was asked in quiz.

My question is taken from Molecular Diffusion in Liquids in division Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer

1 Answer

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by (39.8k points)
The correct option is (c) 7.5

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

                              D(AB) = 7.5 sq.m/sec.

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