Organic Chemistry Basics 2 Question 13
13. The distillation technique most suited for separating glycerol from spent lye in the soap industry is (2016 Main) (a) fractional distillation
(b) steam distillation
(c) distillation under reduced pressure
(d) simple distillation
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Answer:
Correct Answer: 13. (c)
Solution:
- Glycerol with high boiling point $\left(290^{\circ} \mathrm{C}\right)$ 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, liquid is made to boil at lower temperature than its boiling point by lowering the pressure on its surface.
