an ethanol (a)-water (b) solution in the form of a stagnent film 2.0 mm thick at 293 k is in contact at one surface with an organic solvent in which ethanol is soluble and water is insoluble. hlence, nu-0. at point i the concentration ethanol is 16.8 wt % and the solution density is 972 8 kg/m'. at point 2 the concentration of ethanol is 6.8 wt % and the solution density is 988.1 kg/m'. the diffusivity of ethanol is 0.740 x 10 m/k calculate the steady state flux n, in 36 hours.