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What is the reason for using as little ethanol as possible to dissolve the crude product (aspirin) before recrystallization?
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- What is the reason for using as little ethanol as possible to dissolve the crude product before recrystalliazation?In the aspirin synthesis experiment, what is the reason for using as little ethanol as possible to dissolve the crude product before recrystallization?What is the purpose of washing the crude product with petroleum ether before filtration?
- Give a clear explanation answer Given A naphthalene sample is contaminated with a small amount of sodium chloride. Comment on each solvent: toluene, chloroform, and water, which is the best solvent for recrystallization for purifying the sample?2) What’s the principle of extraction and recrystallization ? 2) What’s the best method to separate the compound? WhyCis-3-hexene and trans-3-hexene can be separated using GC. Explain why these two compounds can be separated by GC and not by fractional distillation.
- 1. What is the Victor-Meyer test? Describe how it is performed including reagents and describe the results. Use equations if possible. 2. Differentiate between wine and liquor. 3. In what test/s are the paraffins and benzene similar?Give the advantages of using steam distillation in the recovery of an organic liquid from a mixture.1. What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol? 2. Enumerate some pharmaceutical and medical uses of eugenol 3. What does the ferric chloride test identify? Is it specific test for eugenol? Why or why not?