THE FRIEDEL-CRAFTS REACTION: ACETYLATION OF FERROCENE Ferrocene was acetylated in acetic anhydride and phosphoric acid. It proceeded via a Friedel-Crafts reaction without the use of organic solvents or strong Lewis acid. Operations and Observations A mixture of ferrocene (1.5 g‚ 0.008 mol)‚ acetic anhydride (5 mL) and phosphoric acid (1 mL 85%) was heated over a steam bath until all the ferrocene dissolved and the mixture darkened from orange to dark red. The mixture was then refluxed with
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Escherichia coli Microbiology Lab NAS 185-14L Introduction In this lab experiment we did several test to determine what our unknown bacteria was. To determine this we recorded the results of how the bacteria reacted to different media. Depending on the results of each test we could narrow down the different bacteria to determine what our unknown is. This experiment will also determine if our bacteria is a fermenter of sugars and if it is catalase positive. If the bacteria is
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form chlorine monoxide. Then it is regenerated through the reaction with monatomic oxygen in the second equation. The net result of the two reactions is the depletion of ozone and atomic oxygen.6 Chlorofluorocarbons (CFCs)‚ halons‚ and methyl bromide are a few of the ozone depletion substances (ODS) that break down ozone under intense ultraviolet light. The bromine and fluorine in these chemicals act as catalysts‚ reforming ozone (O3)
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organic laboratory techniques inside the lab to get one oriented to the basic methods of procedure that can be used for later experiments. This experiment involves the separation of benzoic acid from a more crude form‚ consisting of benzoic acid‚ methyl orange‚ a common acid/base indicator‚ and cellulose‚ a natural polymer of glucose (Huston‚ and Liu 17-24). The technique that is used to perform this separation is called extraction. Extraction is a systematic process of separating mixtures of compounds
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pure is by recrystallization. This experiment includes the determination of a good solvent for recrystallization for compounds such as: acetanilide‚ acetamide‚ aspirin‚ benzoic acid‚ naphthalene‚ and sucrose‚ for solvents such as: water‚ ethanol‚ benzene‚ and ethyl acetate. Also pure acetanilide is achieved. here are five major steps in the recrystallization process: dissolving the solute in the solvent‚ performing a gravity filtration‚ if necessary‚ obtaining crystals of the solute‚ collecting the
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organic compound in the indicated solvents either as soluble‚ partially soluble‚ or insoluble. (9 Points) Organic Compound Water (solvent) Methyl alcohol (solvent) Hexane (solvent) Benzophenone Malonic Acid Biphenyl 2) There should be a difference in the results between the solubilities of biphenyl and benzophenone in methyl alcohol. Explain why there is this difference. If no difference was observed‚ then predict which one should be more soluble and
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tube only showed growth along the stab line‚ the rest of the tube was clear‚ which allowed me to come to the conclusion my unknown was nonmotile. The genus that best matched a gram negative‚ rod‚ nonmotile‚ facultative anaerobe was Klebsiella. The Methyl red‚ Voges-
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contains a six-membered ring in the chair conformation with all the substituents equatorial. Draw this most stable conformation of glucose. Reactive intermediates and their properties (Chpt 5): 4. Draw the Lewis structures of methyl carbanion‚ methyl carbocation‚ methyl radical‚ and methylene carbene. Which is the most electrophilic? Which is the most nucleophilic? 5. Write a mechanism for the light-initiated reaction of cyclohexane with chlorine to give chlorocyclohexane. Draw a reaction-energy
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1. Title: The Process of Determining the Unknown Bacteria #9 Rachel Judecki July 5‚ 2011 2. Introduction: Each student was given unknown bacteria and was instructed to perform a variety of experimental tests that would help to identify their bacteria. During the process of identification‚ the unknown bacteria was added to many different testing medias using aseptic technique. They are as follows: lactose fermentation on eosin methylene blue (EMB)‚ TSI (Triple Sugar Iron agar)‚ Phenol
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bacteria could not use lactose or sucrose. o Sugar fermentation tests are positive when the pH turns acidic. How are media for these tests modified to allow production of acids to be detected? The MR test employs the addition of the pH indicator methyl red‚ to
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