Formulae on Purification Characterization Organic Compounds


Crystallization involves the preparation of saturated solution of the given compound in a suitable solvent at a temperature below its boiling point.

Sublimation is employed for those subtances which change directly from solid to gas on heating and on cooling back to solid. It is employed for those substances which have high vapour pressure at normal atmospheric pressure eg. Camphor, Indigo, Benzoic Acid, Naphthalene etc.,

Involves conversion of a liquid into its vapours by heating and condensing the vapours to liquid by cooling.

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