A South African Company supplied a multicomponent hydrocarbon mixture to a separation laboratory. A multicomponent hydrocarbon mixture feed mixture was supplied as liquid at boiling point., The mixture is to be fractionated to give product distribution shown in Table 1.. Table 1: A mixture of the composition with relative volatile, distillation, and bottom mole fraction 2.1. Determine the Light and Heavy Key components for the system. 2.2. Using Underwood's method determine the range of the required value of (=1.3,1.4,1.5). 2.3. Determine the minimum reflux ratio. (5) 2.4. Find the minimum number of stages