A vapor mixture containing 70.0 mole % benzene and 30.0 mole % toluene at 1 atm is cooled isobarically in a closed container from an initial temperature of 115C. Use the Txy diagram below to answer the following questions. 115 110 105 1400 1300 1200 100 Vapor 95 1100 Temperature (C) 20 Liquid Pressure (mm Hg) 1000 Liquid 85 900 80 800 Vapor 75 70 700 600 500 0 65 0 1.0 0.2 1.0 0.2 0.4 0.6 0.8 Mole fraction benzene P = 1 atm 0.4 0.6 0.8 Mole fraction benzene T = 100C First Condensation Read the graph carefully. At what temperature does the first drop of condensate form? i C What is its composition? i ! mol benzene/mol Vapor/Liquid Ratio At one point during the process the system temperature is 90.0C. Determine the mole percent of benzene in the vapor and liquid phases and the ratio (total moles in vapor/total moles in liquid) at this point. Vapor: i mol benzene/mol Liquid: mol benzene/mol V/L: i mol/mol Last Condensate At what temperature does the last bubble of vapor condense? i i C What is its composition? i mol benzene/mol Save for Later Attempts: 0 of 3 used Submit