(a) A binary mixture is distilled using the distillation column seen in Figure 1. Mole fractions of the more volatile component are represented by the symbol of x for hexane and symbol of y for heptane, whereas molar flow rates are represented by A, B, and C. Despite fluctuations in feed flow rate C, it is desirable to maintain control over distillate composition x. All flow rates can be measured and manipulated with the exception of C, which can only be measured. x is measured using a composition analyzer. i. Identify and design a feedback control method to control distillate composition x by referring to Figure 1. (6 Marks) ii. Identify and design a feedforward control method to control distillate composition x by referring to Figure 1. (6 Marks) (a) A binary mixture is distilled using the distillation column seen in Figure 1. Mole fractions of the more volatile component are represented by the symbol of x for hexane and symbol of y for heptane, whereas molar flow rates are represented by A, B, and C. Despite fluctuations in feed flow rate C, it is desirable to maintain control over distillate composition x. All flow rates can be measured and manipulated with the exception of C, which can only be measured. x is measured using a composition analyzer. i. Identify and design a feedback control method to control distillate composition x by referring to Figure 1. (6 Marks) ii. Identify and design a feedforward control method to control distillate composition x by referring to Figure 1. (6 Marks)