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- We perform a 1.0 mL 2-methyl-2-butanol alcohol dehydration by simple distillation also using H2SO4. To collect 2-methyl-1-butane and 2-methyl-2-butane. Why do we perform a simple distillation and not a fractional distillation in this experiment?why is fractional distillation a better method of separating 1-chlorobutane and toluene than simple distillationHow would you recrystallize a mixture of Benzoic acid and 2-Naphthol? Discuss the choice of solvent and recrystallization process. (Hint. Look up the solubility of these two compounds in different solvents)
- 1. Alcohols X and Y formed layers with Lucas reagent. Compound X formed brown precipitate with KMnO4 while compound Y did not. Which are the possible identities of compounds X and Y? a.tert-butanol, propanol b.isopropanol, isopentyl alcoholc. methanol, ethanold.tert-butanol, isopropanol2. Alcohols that cannot be distinguished using the Lucas test? a.isopropanol and methanol b.t-butyl alcohol and ethanol c.t-butyl alcohol and 2-methylbenzyl alcohol d.ethanol and n-propanolWhat is the chemical reaction when completing extraction experiment and using 100mg Benzoic Acid, 2ml H2O and CH2Cl2 each? What is the chemical reaction when completing extraction with 4-chloroaniline and adding in HCl?Will the melting point increase or decrease with the benzoic acid, 4-chloroanaline, and naphthalene if : -You do not remove all of the HCl from the first extraction (mixture) -You forget to do the NaOH extraction (aq layer) -You do not rotovap all of the solvent in the final step (organic layer)
- An organic chemistry laboratory Extraction; the extraction of crude naphtalene- benzoic acid mixture. Naphthalene is a suspect carcinogen and is toxic to aquatic life. Find an alternative pair of molecules that adhere better to the principles of green chemistry and can be separated by extraction using green' solvents. (kindly answer fully)What is the reason for using as little ethanol as possible to dissolve the crude product (aspirin) before recrystallization?Describe some observations you found fascinating. Discuss the purpose of acquiring a melting point and what it means to a budding scientist, like you! Discuss how we might have lost material in the experiment (i.e. operational error)? List the two major functional groups ( and ) present in the structure of acetylsalicylic acid. Weight of tablet = 2grams Weight of ASA recovered or isolated = 100mg. Please answer those 2 not graded thanks
- What are emulsions? Why do they form during extractions? How is their formation minimized?Each of the student statements below is wrong. Explain why they are not correct. (a) All my compound dissolved right away in the small amount of solvent I added at room temperature, and I didn’t need to heat it at all. This means I’m going to get lots of pure compound out. (b) I did a recrystallization of naphthalene and my percent recovery was very high (99%), so I must have pure product. (c) When you’ve dissolved all your compound in hot solvent, and you’re in a hurry, it’s ok to just place it straight into the ice bath.What is the reason for using as little ethanol as possible to dissolve the crude product before recrystalliazation?