Question

glycerol can be purified by distilnation under reduced pressure

Answer 1

Answer:

yes it's true it is purified by distillation

Answer 2

Answer:

Glycerine is purified by distillation under reduced pressure or vaccum distillation because it decomposes much below its boiling point, i.e., 290^o C 290

o

C However, at 12 mm HgHg pressure, it boils at 180^o C 180

o

C and can be safe distilled

Explanation:

This method is used for the purification of high boiling liquids and liquids which decompose at or below their boiling points. ... Glycerol which decomposes at its boiling point (563 K) under atmospheric pressure can be distilled without decomposition at 453 K under 12 mm of Hg.