The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
The distillation technique most suited for separating glycerol from spent-lye in the soap industry is distillation under reduced pressure.
At atmospheric pressure, the boiling point of glycerol is 290oC. At this temperature, it decomposes before it distills. Hence, the distillation is carried out under reduced pressure by applying vacuum which decreases the boiling temperature of glycerol and prevents its decomposition.
A flask contains a mixture of isohexane and 3-methylphentane. One of the liquids boils at $$63\ ^oC$$ while the other boils at $$60\ ^o \text{C}$$. What is the best way to separate the two liquids and which one will be distilled out first?
Give a brief description of the principles of distillation.
Glycerin can be purified by:
Distillation under reduced pressure is generally used to purify those liquid which:
Glycerol decomposes at its boiling point $$(563\,K)$$. Discuss a method which can used for its purification.
Give a brief description of the principles of the following process taking an example. Distillation under reduced pressure.
Glycerol, which decomposes at its boiling point can be purified by :
Distillation under reduced pressure is employed for :
Fill in the blanks : Liquids which decompose at or below their boiling points are purified by .............
Glycerol boils at $$ 290^o C $$ with slight decomposition. Impure glycerine can be purified by