D16.* 10.0 kmol of a 40.0 mol% methanol and 60.0 mol% water mixture is processed in a normal batch distillation system with a still pot that acts as an equilibrium stage and a column with two equilibrium stages (total of three equilibrium contacts). The column has a total condenser, and reflux is a saturated liquid. The column is operated with a varying reflux ratio so that xp is held constant. We desire a final still pot concentration of 8.0 mol% methanol, and distillate should be 84.0 mol% methanol. Pressure is 1 atm, and CMO is valid. a. What initial external reflux ratio, Lo/D, must be used? b. What final external reflux ratio must be used? c. How much distillate product is withdrawn, and what is the value of W final?

Please show every step you used to solve each problem. A vapor mixture of 100 mol/s comprising 55 mol% benzene and 45 mol % toluene is sent to a partial condenser operating at 760 mm Hg. 75 mol% of the toluene in the feed is recovered in the liquid product. Determine all unknown flow rates, compositions, and required heat removal. and do a degree a. Draw a process flow diagram of freedom analysis b. Write out equations used to solve and to calculate all specifications used in Excel Solver unknown flow rates, compositions, C. F Specify the temperature and pressure of the feed as T₁ = 102°C and P₁ = 760 mm Hg. Choose the lowest enthalpy stream (liquid product stream) for a reference condition. Calculate the required heat removal analytically by hand (No Excel Solver). d. Create Enthalpy Table

8.29 Show complete solution and diagram

a process consists of two distillation columns. the composition of the feed to the first column is 30 mol% benzene, 30 mol% toluene, and 40 mol% xylene. the top stream of the first column does not contain xylene. the benzene content of the dome stream from the first column is 55 mol %. the bottoms stream from the second column has a flow of 100 mol/h and contains 15 mol% toluene and no benzene; while the top stream of the second column contains 50 mol % benzene. the upper stream flow of the first tower is twice the upper stream flow of the second tower. determine the molar flux of the fresh feed stream and the overhead stream leaving the first column.