Question #1 (9 points) In the process of determining the diffusion coefficient of acetone (CH3COCH3) that has a density of 790 kg/m and a molar mass of 58 g/mol Winklemann experiment was performed (at 290 K and 99.75 kPa) using air as the flowing stream. The liquid level in the tube initially was 18 mm from the top and the level falls to 27.5 mm in 15,000 seconds. If the vapor pressure of acetone is 21.95 kPa, (a) Calculate its diffusivity in air at experimental condition. (b) Compare the value obtained in part (a) by estimating the diffusivity of acetone in air using Fuller, Schettler and Giddings correlation. Table 22.3 Atomic diffusion volumes for use in estimating Das by the method of Fuller, Schettler, and Giddings 10 Atomic and Structure Diffusion-Volume Increments, v 16.5 19.5 H 1.98 S 17.0 5.48 Aromatic Ring -20.2 N Heterocyclic Ring -20.2 Diffusion Volumes for Simple Molecules, v H2 7.07 16.1 12.7 ,0 6.70 D2 Kr 22.8 C(Cl2)(F2) 114.8 CO 2.88 18.9 SF 69.7 He 17.9 CO2 26.9 N2 Cl2 37.7 35.9 N20 Br2 O2 67.2 16.6 20.1 14.9 41.1 Air NH3 SO2 CI OO 5.69 Ar