Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back


Organic Compounds: Methods Of Purification - I

Have a doubt? Clear it now.
live_help Have a doubt, Ask our Expert Ask Now
format_list_bulleted Take this Lesson Test Start Test

Organic Compounds: Methods Of Purification - I - Lesson Summary

Based on the nature of the organic compounds and the impurities present in them, organic compounds can be purified using five different methods. Organic compounds are purified by five different methods: sublimation, crystallization, distillation, differential extraction and chromatography.

Sublimation is a process which involves the conversion of a solid directly into vapour without any intermediate liquid. Sublimation is used to separate sublimable compounds from non-sublimable impurities.

Crystallisation is a process of purification of solid organic compounds. It is one of the most commonly used techniques for the purification of solid organic compounds. It is based on the difference in solubilities of the compound and the impurities in a suitable solvent.

Distillation is used when the liquids in the mixture differ appreciably in their boiling points. Distillation helps to separate liquids from impurities (or) other liquids. Simple distillation is commonly used for liquids that are sufficiently stable at their boiling points and contain non-volatile impurities.

Fractional distillation is used to separate liquids with a very small difference in their boiling points.

Liquids that decompose at (or) below their boiling points and liquids with very high boiling points are separated using distillation under reduced pressure. Reducing the pressure on the liquid surface reduces the boiling point of the liquid.

Steam distillation is used to separate substances that are steam volatile and water insoluble.


Feel the LearnNext Experience on App

Download app, watch sample animated video lessons and get a free trial.

Desktop Download Now
Try LearnNext at home

Get a free home demo. Book an appointment now!