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What is fractional crystallization ?

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  • Fractional distillation is a process by which a chemical compound is separated into components by crystallization on the basis of their different solubilities, by means of evaporating the solution. ​
  • In this process the compound is mixed with a solvent, heated, and then gradually cooled so that, as each of its constituent components crystallizes and it can be removed in its pure form from the solution.
  • For example, fractional distillation is used in oil refineries to separate crude oil into useful substances having different hydrocarbons of different boiling points.


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