If one or both components of a binary gas mixture are polar, a modified Lennard-Jones relation is often used. Brokaw (equation (1969) has suggested an alternative method for this case. 1-49) is used, but the collision integral is now given by

(a) Modify the Mathcad routine of Figure 1.3 to implement Brokaw's method.
(b) Estimate the diffusion coefficient for a mixture of methyl chloride and sulfur dioxide at 1 bar and \(323 \mathrm{~K}\), and compare it to the experimental value of \(0.078 \mathrm{~cm}^{2} / \mathrm{s}\). The data required to use Brokaw's relation are shown below (Reid et al., 1987):

Data From Figure 1.3:-

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= 2 [Eq.(1-44)]+ 0.1982 AB (1-136) T where 1.9410 VTb 3..2 Hp dipole moment, debye [1 debye = 3.162 x 10-25 (J m) 1/2] = 1.18(1+1.38) = 1.585V 1+1.362 11/3 (1-137) (1-138) (1-139) AB ABAB AB EA CB K VK K (1-140)