We underwent two different reaction schemes using Dipotassium phosphate (K2HPO4) and Potassium hydroxide (KOH) to isolate the compounds of pure Acetylsalicylic Acid/Aspirin and N-(4-hydroxyphenyl) Ethanimidate/Acetaminophen respectively from Excedrin. The first reaction scheme to undergo acid-base organic extraction was to isolate the most acidic compound in Excedrin with a weak base‚ K2HPO4. We isolated the aspirin using aqueous base extraction‚ with Dipotassium phosphate then treated with HCl
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Chemistry 3373F Lab Manual 2008 Modified 11/07 Table of Contents Chem 3373 Laboratory Schedule for Fall 2008.............................................................................2 The Benzoin Condensation of Benzaldehyde ..............................................................................3 Synthesis of Dilantin and Related Compounds (two weeks).........................................................6 Synthesis of an Alkaloid: Pseudopelletierine (two weeks) .............
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(0.55 g‚ 96 %). δH (300 MHz‚ CD3OD) 2.57 (1 H‚ br s‚ alkyne CH)‚ 3.01 (1 H‚ br s‚ OCH2)‚ 7.18 - 7.33 (1 H‚ m‚ 5-CH)‚ 7.40 (1 H‚ br s‚ 1-CH)‚ 7.85 (3 H‚ m‚ 6‚7‚8-CH)‚ 8.29 (1 H‚ br s‚ 9-CH). vmax /cm-1 3290 (alkyne C-H stretch‚ m)‚ 1234 (alkyl aryl ether C-O stretch‚ s) and 1185 (sulfonate S=O stretch‚
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that has a strong enough threshold stimulus such as physical stimulation such as heat or chemical stimulation such as sodium chloride. Inhibiting a Nerve Impulse Activity 5: Testing the Effects of Ether 1. What sort of trace do you see? Flat trace 2. What has happened to the nerve? Ether blocked the nerve impulse transmission to
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your experimental results: What kinds of stimuli can elicit an action potential? Electrical‚ mechanical‚ thermal‚ and chemical stimulation are all capable of generating an action potential in a nerve. Activity 5: 1. What are the effects of ether on the nerve? The screen displays a flat line‚ indicating no nerve response. The nerve has been
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Your exam will be multiple choice Exam # 1 Introductory Chemistry Be sure to show your set up for all mathematical problems. Your answers must have the correct number of significant digits and the correct units. I. Chemistry is a quantitative science therefore we must make measurements. All measurements have an uncertainty that we need to be aware of in our calculations. A. We need to be able to determine the number of significant figures in a measurement. For the following measurement state the
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CHLORINE DIOXIDE AND CHLORITE 105 7. ANALYTICAL METHODS The purpose of this chapter is to describe the analytical methods that are available for detecting‚ measuring‚ and/or monitoring chlorine dioxide and chlorite‚ its metabolites‚ and other biomarkers of exposure and effect to chlorine dioxide and chlorite. The intent is not to provide an exhaustive list of analytical methods. Rather‚ the intention is to identify well-established methods that are used as the standard methods of analysis
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Introduction Friedel-Crafts acylation of anisole with acetic anhydride was used in this experiement to synthesize 4-methoxyacetophenone with the use of a reflux apparatus. Friedel-Crafts reactions can be done by alkylation‚ which involves mixing an alkyl or acyl halide with a Lewis acid‚ or acylation‚ which is done with acid chlorides or anhydrides(Lefevre). Acylation was used because it does not have as many disadvantages aklyations reactions have such as polyalkylation‚ second electrophilic attacks
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system is to balance yourself. They believe that your body is self-correcting and self-perpetuating‚ like the universe itself. It mostly focuses on diet‚ yoga‚ and state of the mind‚ body‚ soul‚ and senses. The five elements of Ayurveda are space/ether‚ air‚ fire‚ water and earth. Space means emptiness‚ allowing communication and movement. It’s place in your body is your mouth‚ nose‚ lungs and abdomen. The sense is hearing and sound. Air is defined as movement in the body and energy. It causes your
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essential oil of cloves are eugenol‚ eugenol acetate‚ and B-caryophyllene. Smaller amounts of compounds found in the essential oil of cloves are hydrocarbons‚ alcohol‚ phenol‚ ether‚ aldehyde‚ ketone‚ acid‚ and ester. Essential oils are volatile and have an odor. Essential oils are often flammable‚ soluble in alcohol and ether but partially soluble in water. The technique used was steam distillation. The steam distillation technique was used because it lowers the pressure in the flask so that it does
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