A distillation column with a partial reboiler and a total condenser is separating chloroform from carbon tetra chloride at total reflux. We wish to use a column that operates as if it had 15 equilibrium contacts including reboiler. The column is operated under total reflux and the distillate composition was measured as 0.982 mole fraction chloroform and bottoms of 0.037 mole fraction chloroform. Determine the relative volatility of the system.