A liquid stream containing 50.0 mole% benzene and the balance toluene at 25C is fed to a con tinuous single-stage evaporator at a rate of 1320 molls. The liquid and vapor streams leaving the evaporator are both at 95.0C. The liquid contains 42.5 mole% benzene and the vapor contains 73.5 mole% benzene. (a) Calculate the heating requirement for this process in kW. (b) Using Raoult's law (Section 6.4b) to describe the equilibrium between the vapor and liquid outlet streams, determine whether or not the given benzene analyses are consistent with each other. If they are, calculate the pressure (torr) at which the evaporator must be operating; if they are not. give several possible explanations for the inconsistency
September 27, 2016 Lecture 10 The Atmosphere - Things to remember o Zones in the Ocean Photic Zone (Sunlight, plants, 0-100m) Twilight Zone (poorly lit, no photosynthesis, hunters [animals – fish, squid] >1000m) Dark Zone: (no light, no plants, scavengers) o Sunlight does 4 things Warms the ocean (direct vs. indirect sunlight) Reflects out Red light is absorbed, blue light is transmitted or reflected No red light below 10m (red fish appears gray) Drives Photosynthesis Drive
