Q6) Find the diffusion rate of Propanol at 25C under steady state conditions in a water film with thickness of 0.15cm. The concentrations of Propanol at each sides of the film are, 15% and 5% of Propanol by weight, respectively. The diffusivity of Propanol in water solution is 5.5102cm2/sec. The densities of 15% and 5% Propanol solutions at 25C are 0.968 and 0.985g/ml, respectively. Molecular weight of Propanol (C3H8O) and water are 60 and 18g/mol, respectively (25 marks)