Interpretation:Use of steam distillation than simple distillation for isolation of citral from lemon grass oil should be determined.
Concept introduction:Simple distillation is separation technique that is used to separate mixture of organic compounds with difference in their boiling points more than
Steam distillation is technique that is used to separate and purify volatile compounds either immiscible or almost immiscible in water. This method makes use of codistillation of mixture of water and other organic liquids. This can also be applied for separation and purification of some organic solids.
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EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
- Propose an efficient separation and recovery scheme for a mixture of toluene, benzoic acid, andaniline. Consider that steam distillation is not an option.arrow_forwardWhy should the boiling point of the solvent be lower than the melting point of the compound being recrystallized?arrow_forwardGive some reasons that would lead you to purify a liquid by using vacuum distillation rather than by using simple distillation.arrow_forward
- In the isolation of eugenol using steam distilation, what will happen if one use instead fractional distillation than steam distillation thank uarrow_forwardWhy should the recrystallization mixture be cooled in an ice bath prior to filtering?arrow_forwardWhat is the purpose of grinding the cloves before the steam distillation? The isolation of eugenol from clovesarrow_forward
- 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?arrow_forwardWhat are emulsions? Why do they form during extractions? How is the formation of an emulsion minimized?arrow_forwardSome procedures include the addition of sodium carbonate before liquid-liquid extraction. What is the purpose of this step?arrow_forward
- 1. Why is the washing of crystals on the filter paper not as effective a process of purification as crystallization?2. How do you account for the formation of crystals of different sizes in slow and rapid crystallization process?3. What properties should ideally be possessed by a recrystallization solvent?arrow_forwardWhy the Refractive Index of hexane and heptane from simple distillation closer to the refractive index of hexane and heptane from fractional distillation?arrow_forwardIn this experiment, 1.0 mL of saturated sodium chloride is used to rinse the Hickman head after the initial distillation. Why is saturated sodium chloride, rather than pure water, used for this procedure and the subsequent washing of the organic layer?arrow_forward
- EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENTMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole