Problem 4 A distillation column is initially designed to separate a mixture of toluene and xylene at around ambient temperature (say, 100C) and pressure (say, 1 barg). The column has 20 stainless steel valve trays and is 2 m in diameter and 14 m tall. Determine the purchased cost and the bare module cost using a CEPCI = 500. A column with similar dimensions, number of trays, and operating at the same conditions as given in Problem is to be used to separate a mixture containing the following chemicals. For each case determine the bare module cost using a CEPCI = 500. a. 10% nitric acid solution b. 50% sodium hydroxide solution c. 10% sulfuric acid solution d. 98% sulfuric acid solution