Jeana Greaves Chem3301-112 June 19‚ 2013 Synthesis of Aspirin from Methyl Salicylate Introduction The synthesis of Aspirin (Acetyl Salicyclic Acid) began with methyl salicylate and sodium hydroxide as the reagent. The polar oxygen accepts the electrons from now positively charged hydrogen. The positively charged sodium disassociates leaving the hydroxide ion with a negative Scheme 1 shows the mechanisms that were demonstrated during the synthesis of Aspirin. charge that attracts to the positively
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Microscale Synthesis of Acetylsalicylic Acid [pic] Introduction: Acetylsalicylic acid is a wonder drug par excellence. It is widely used as an analgesic (pain reliever) and fever depressant. It also reduces inflammation and may even prevent heart attacks. It has a few side effects for some people‚ yet it is safe enough to be sold without a prescription. Because it is easy to prepare‚ aspirin is one of the most inexpensive drugs available. It is produced in vast amounts. In fact‚ industry
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we had to save time and cut some days out. We were able to do this by being given our own Salicylic acid (SA) prepared for us instead of having to used wintergreen to make it and recrystallize it. In addition‚ we skipped the qualitative test of our purity for SA and Aspirin (ASA). The first part of this experiment is the preparation of ASA from SA were‚ we prepared our aspirin from the collected salicylic acid. A screw-capped vial was weighed empty to 29.7416 grams and filled with SA. The mass recorded
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mixture. Why is it important that she separates the two enantiomers and test each for its biological activity? 2. (6 pts) Phosphoric acid (H3PO4) has three dissociable protons‚ with the pKa’s shown below. Which form of phosphoric acid predominates in a solution at pH 4? Explain your answer. Acid pKa H3PO4 2.14 H2PO4– 6.86 HPO42– 12.4 3. (4 pts) Mutations may arise during DNA replication
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formulated with Micro Clear technology to not only treat blemishes‚ but to also help prevent emerging breakouts. Micro Clear technology boosts the power of salicylic acid by breaking through oil and unclogging pores for fast acne relief. The reasoning behind Neutrogena’s “Skin Clearing product is due to the salicylic acid ingredient. The salicylic acid prevents you from breaking out and also clears up present acne. This product is for women who are looking for a great foundation that won’t clog pores
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from the bark of the willow tree for labor pains and also for fever and pain. The active substance in this juice‚ which does in fact ease pain‚ is what we know today as salicylic acid. Being derived from the Latin word for willow‚ its name gives a clue as to its origin : Salix. It is now known that it is precisely salicylic acid that is contained in the myrtle leaves which the Egyptians used to treat and relieve pain. Advantages of Aspirin Aspirin helps relieve pain from headaches and
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juice. When you rub lemon juice on your pimples‚ it has a quick effect. Use it before going to sleep to see great results in the morning. 9 ways to prevent a breakout and get clear skin 1. Do the One-Minute Rule Using a face wash laced with salicylic acid (from one to two percent depending on how bad‚ and how often‚ you break out) is a surefire way to stop pimples from forming. It’s simple: Instead of spot treating after one pops up‚ you’re keeping every single pore clear from the get go. Suds
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Purpose: The purpose of this experiment was to recrystallize a 95% pure sample of benzoic acid contaminated with approximately 5% salicylic acid using two different methods to determine the melting points and discover the impurities of the substance. Results: After recrystallization of the benzoic acid‚ the starting and ending masses as well as the melting point ranges were determined. This experiment was conducted twice‚ following the same
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aspirin? Acetylsalicylic acid 2. Using your data from Experiment 2‚ how can you be sure you synthesized aspirin? By using the colors as a guide‚ we can compare the Acetylsalicylic acid + 8 mL FeCl3 to the Aspirin Crystals from Experiment 1 + 8 mL FeCl3 in order to see if it synthesized. 3. Would you say that your synthesized aspirin is relatively pure? How can you tell? One way that the purity of aspirin can be judged is by it’s color as pure acetylsalicylic acid is a brown color. I would
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percent acetylsalicyclic acid (active ingredient) in tablets using acid-base titration was determined‚ the percent acetylsalicyclic acid in tablets by formation of a colored iron(III)-salicylate complex was determined using spectrometry‚ and then the percents from each process was compared. Acetylsalicylic acid is produced when salicylic acid and acetic anhydride react in the presence of H2SO4. Consequently‚ the said reaction produces acetylsalicylic acid and acetic acid. In part one of the lab
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