why a beaker of warm water was used as the heat source to remove methylene chloride by simple distillation in order to recover the crude caffeine. Why not use a more conventional heat source such as a hot plate or heating mantle that could  supply more heat than warm water

Macroscale and Microscale Organic Experiments
7th Edition
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Kenneth L. Williamson, Katherine M. Masters
Chapter6: Steam Distillation, Vacuum Distillation, And Sublimation
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why a beaker of warm water was used as the heat source to remove methylene chloride by simple distillation in order to recover the crude caffeine. Why not use a more conventional heat source such as a hot plate or heating mantle that could  supply more heat than warm water?

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