Karl Marx

What is the meaning of distillation?



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To distill a liquid is to separate its fractions by means of their differing thermal points for change of state. For example, alcohol can be separated from water because alcohol boils at a lower temperature, so within a certain range of temperatures, alcohol is a vapor while water is still a liquid.

A similar process, called fractional crystalization, works with liquids which have different freezing points. In this case, water freezes while alcohol remains in liquid form.