Q3- Benzene is separated from toluene by distillation. The feed to the column is 40 mole\% benzene, the balance toluene. Estimate the column diameter to recover 98% of the benzene from the top of the column and 95% of the toluene from column base by using the given information below: - The feed rate to the column is 5000kg/h, feed is at its boiling point. - Molecular weight of benzene: 78.11g/mole, molecular weight of toluene: 92.14g/mole - Reflux ratio =2 - Plate spacing =0.6m - Down comer area =15% of the total - Percentage flooding =80% - At the top of Column: T=97C; Vapour density =3.48kg/m3; Liquid density =871kg/m3; Molecular weight =79.1g/ mole Surface tension =20mN/m