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- the eugenol and water distillate you collect is apt to be cloudy, particularly the first part of this distillate. Explain why.1. What was the purpose of the concentrated sulfuric acid in the first step in the synthesis of aspirin? 2. What was the purpose of performing titration analysis on the product aspirin synthesized? 3. If the synthesized aspirin was not dried before melting point determination, what would be its effect?why is benzoic acid insoluble in pure water but soluble in NaOH solution?
- assuming that charcoal and sugar are the main impurities in a sample of crude acetanilide explain how recrystallization from water would remove each.CREATE A SCHEMATIC DIAGRAM FOR THIS PROCEDURE: C. Preparation and storage of standard solutions 1. Use the weighed and transferred NaCl powder in procedure B. Dissolve it in about 10 mL distilled water. Use a stirring rod to gently stir the solution until it has been dissolved to an extent. Make sure you will not incur any noise while stirring. 2. When the NaCl powder is partially dissolved, transfer the resulting solution into a 100 mL volumetric flask. Use a stirring rod and funnel. 3. Repeat steps 1 and 2 until no NaCl remains in the beaker and until you are almost at the mark of the volumetric flask. 4. Rinse the last portion of the solution from the stirring rod into the volumetric flask with a stream of water from the wash bottle. Rinse the funnel and remove it. Dilute the solution in the flask using a Pasteur pipette until the bottom of the meniscus is even with the graduation mark. 5. Put a stopper on the volumetric flask. Invert the glassware up and down around five…2.1g of sample are dissolved in methylene chloride and the sample is extracted with an aqueous solution of acid and base. Three compounds are isolated - 0.7g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % composition of ethyl p-aminobenzoate in the recovered mixture. (Round the answer to 1 significant figure. Give just the number, not a % sign.)
- State the use of saturated sodium chloride in the purification of isoamyl acetate and how it acts?You were given a mixture of two miscible solvent A and B that you are tasked to separate. You know that solvent A has a boiling point of 49 oC while solvent B has a boiling point of 174 oC. Which of the listed method would overall be the most efficient? Fractional distillation Recrystallization Solid-liquid extraction Liquid-liquid extraction Simple distillation Acid-Base extractionIn a few sentences summarize your results for odor, solubility, acidity and the FeCl3 test for the knowns. Ethanol 2-Propanol t-Butanol Cyclohexanol
- 1. The reactant (2-methyl-2-butanol) has a limited solubility in water at room temperature. 10.0 mL of 2-methyl-2-butanol will dissolve in ~ 80 mL of water. In this experiment, 10.0 mL of 2-methyl-2-butanol readily dissolved in 20 mL of 12 mol/L aqueous HCl. a. Why does this compound exhibit some solubility in water? Consider intermolecular forces and include a diagram to illustrate the relevant intermolecular forces. Why is it not completely miscible in water (in all proportions)?What is the purpose of this experiment? To analyze the purity of salicylic acid after the recrystallization method of purification.1. Why are the acidic extracts and the basic extracts cooled before neutralization during Acid/Base extraction experiment? 2. Why was the water used for washing the precipitates on the funnels specified to be cold during Acid/Base extraction experiment.
