Question

Using a table to compare the advantages and disadvantages of using sublimation vs column chromatography techniques...

Using a table to compare the advantages and disadvantages of using sublimation vs column chromatography techniques for caffeine purification

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Answer #1
Technique for the purification of caffeine Advantage Disadvantage
Sublimation Fast and easy because during the sublimation, only the solid caffeine will convert into the gas phase but not impurity present in it, as a result, you will get the caffeine with high purity. Costly process because sublimation requires special equipment and vacuum pump
Column chromatography Economically cheap (Cost effective) because you need only a glass column and solvent (eluent) to run the column for getting pure caffeine. Slow process because it consumes a lot of time for caffeine to elute from the column as it has 4 nitrogens and 2 oxygens which can easily bind to stationary phase and retain there.
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