What is fractional sublimation? how will it be applied to a mixture of 2 substances that sublime closely?



Answer:
Sublimation does not differ from distillation in any important respect , except that special care must be taken to prevent the solid from clogging the apparatus.
Rectification of such materials is impossible. Iodine is purified by sublimation.
Sublimatography is a procedure of fractional sublimation in which a solid is separated into bands along a condensing tube with a temperature gradient

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