Question
Diesel oil, kerosene, petrol and petroleum ether are different fractions of crude petroleum. These have boiling point ranges as 525–670K, 453–550K, 343–473K and 303–363K respectively. When crude petroleum is heated on a fractionating column, arrange the fractions in the order these are collected in the distillate.
Solution
Fractional distlillation is based on the difference in boiling point is less than 25K. Since the boiling point difference is more than 25 K . Therefore the order of distillate is petroleum ether, petrol, kerosene, diesel oil.
