Give a brief description of the principles of distillation.
Distilation is used to separate volatile liquid from non volatile impurities or two volatile liquids having significant boiling point difference. When two liquids have different boiling points, they vapourise at different temperatures. The vapors condense and the two liquids are collected separately. For example, chloroform and aniline having boiling points 334 K and 457 K can be separated by distillation. More volatile chloroform vaporizes first and is collected in the receiver. Aniline is left in the distillation flask.
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?
The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
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