The following experiment was performed to measure the mass diffusivity of n-octane (C8H18, M = 114.2 kg/kmol) in air. Pure liquid n-octane was placed in a vertical tube, 5 cm in diameter. With the tube bottom closed, its top was exposed to a gentle cross flow of air (free of n-octane). The entire system was allowed to reach a steady State at 20°C and 101.3 kPa, while maintaining the distance between the tube-top and the liquid- surface constant at 10 cm, It was observed that, after 38 hours, 1.0 g of n-octane had evaporated. At 20°C, the vapor pressure and density of liquid n-octane are 1.41 kPa and 703 kg/m3, respectively. Calculate the mass diffusivity of n-octane in air at 20°C and 101.3 kPa.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.