Question

A month after a leak forms in an underground septic tank, an organic pollutant achieves a steady-state concentration gradient of 0.45 mol/m3/m, moving away from the leak. The effective diffusion coefficient for this pollutant is 2.1 x 10-4 m2/day. What is the (positive) mass flux from the leak, in mol/m²/day? O 9.5E-5 6.3E-4 2.1E-3 2.1E3

Answer 1

Answer! Given data: Concentration grédient f organic pollutant (desc- 0:45 mayo ie, de = 0-45 mol = 0.45 mol my Given Diffusion coefficient (0) = 2.1x10 m² day According fick's first low of diffusion, the Positive mass flun(d) from the leak is given by J = 2.1x10 m 0045x mal day mm2 J = 9.5x105 mol/m²/day J - 9.5E-5 mollm? I day