Discussion Forum



1)

The distillation technique most suited to separating glycerol from spent lye rn the soap industry is


A) fractional distillation

B) steam distillation

C) distillation under reduce pressure

D) simple distilation

Answer:

Option C

Explanation:

Glycerol with a high boiling point (290oC)  can be separated from spent lye by distillation under reduced pressure. This process is used to purify liquids having very high boiling points. By this process, the liquid is made to boil at a lower temperature than its boiling point by lowering the pressure on its surface.