D) suppose the room is instead at 20 C inseated of 25 C. wouldthe rate of evaporation increase or decrease compared to part (b)?
By what % will the rate increase or decrease ?
Porve your answer to part (d) using equations. Use ratios andcalcaulations as neccessary.
One of the students in my lab carelessly left a beaker containing toluene uncovered on the lab bench. Toluene can negatively affect the central nervous system when inhaled. The inner diameter of the beaker is 10cm, with height of 16cm. The initial volume of toluene is 500 cm3. The room is at 25 degree C. Physical property values are given below. DATA Vapor pressure of toluene at 25 degree C = 28.4 mm Hg Vapor pressure of toluene at 20 degree C = 21.8 mm Hg Diffusivity of toluene in air at 25 degree C = 0.0844 cm2/s. Density of liquid toluene =0.88 g/cm3 Molecular weight of toluene = 92.1 g/mol R =0.08204 L atm/mol K Assume that liquid level of toluene does not change significantly, during the observation time. Calculate the flux of benzene from the liquid surface into the gas phase, in mol/cm2 S. Calculate the rate of benzene evaporation, in mole/s. Would you consider this equimolar binary diffusion, dilute, or single-component diffusion, or none of these? Explain your selection. suppose the room is instead at 20 C inseated of 25 C. would the rate of evaporation increase or decrease compared to part (b) ? By what % will the rate increase or decrease ? Porve your answer to part (d) using equations. Use ratios and calcaulations as neccessary.
