EXPERIMENT 4 Title: Preparation of magnesium sulphate. Date:11.02.2010 Aim: To prepare magnesium sulphate Theory: Magnesium sulfate (or magnesium sulphate) is a chemical compound containing magnesium‚ sulfur and oxygen‚ with the formula MgSO4. In its hydrated form the pH is 6.0 (5.5 to 6.5). It is often encountered as the heptahydrate‚ MgSO4·7H2O‚ commonly called Epsom salt. Anhydrous magnesium sulfate is used as a drying agent. Since the anhydrous form is hygroscopic (readily absorbs water
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Synthesis of Aspirin Learning Goals 1. To synthesize aspirin from salicylic acid and acetic anhydride. 2. To purify the crude product by Recrystallization. Introduction Most drugs are chemical compounds which are described as "organic compounds" because they are comprised primarily of the elements carbon‚ hydrogen and oxygen. The present experiment will be the synthesis of a familiar organic compound called aspirin. The common chemical name is acetylsalicylic acid. Aspirin‚ the
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tube by displacing the water. After that‚ bring out the test tube and ignite it. For Preparation of Iodoform‚ a Halogen Derivative (or Alkyl Halide)‚ first place two milliliter of ethyl in a small beaker and add few crystals of iodine and stir to dissolve. Then‚ add 10% sodium hydroxide solution and stir it until its goes from brown to yellow. Record the observation on the data sheet. For preparation of ethyl acetate‚ first place 3 mL of glacial acetic acid in a test tube and describe the odor on the
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Chapter 1 INTRODUCTION Wine is an alcoholic beverage produced through the partial or total fermentation of grapes‚ other fruits and plants such as berries‚ apples‚ cherries‚ dandelions elder berries ‚ palm and rice can also be fermented. Grapes belong to the botanical family vitaceae of which there are many species. The species that are most widely used in wine production are Vitislabrusca and specially Vitisvinefara‚ which has long been the most widely used wine grape throughout the world
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Laboratory #6 Qualitative Tests for Carbonyls: Aldehydes vs. Ketones Introduction Various chemical tests identifying ketones and aldehydes are used in this experiment in order to identify an unknown carbonyl compound. The tests used are: 2‚4-dinitrophenylhydrazone test‚ Tollen’s Test‚ Benedict’s Test‚ Chromic Acid Test‚ aka Bordwell-Wellman Test‚ Schiff’s Test‚ and Iodoform Test. These classification tests provide results based on color change or formation of precipitation‚ which is then used
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Lab Management Assignment Hand Sanitizer 2012 xxx [Pick the date] HAND SANITISER * * A hand sanitizer or hand antiseptic is a supplement or alternative to hand washing with soap and water. * Various preparations are available‚ including gel‚ foam‚ and liquid solutions. * The active ingredient in hand sanitizers may be isopropanol‚ ethanol‚ n-propanol‚ povidone-iodine. * Inactive ingredients in alcohol rubs typically include a thickening agent such as polyacrylic
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Department of Chemistry University of Kentucky EXPERIMENT 5 Molecular Absorption Spectroscopy: Determination of Iron With 1‚10-Phenanthroline UNKNOWN Submit a clean‚ labeled 100-mL volumetric flask to the instructor so that your unknown iron solution can be issued. Your name‚ section number‚ and locker number should be written legibly on this flask. The flask does not need to be dry on the inside‚ but needs to have been rinsed with distilled water after it has been washed. The flask
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Evaluation of the phytochemical composition and the anti-proliferative potential of seed extract of Dicerocaryum senecioides on Jurkat T cell lines By Humbulani Ronald Tshilongamulenzhe A Dissertation submitted to the Faculty of Science and Agriculture‚ Department of Biochemistry‚ Microbiology and Biotechnology‚ School of Molecular and Life Sciences in accordance with the requirements of the University of Limpopo for honours for the degree Bachelor of Science in Biochemistry UNIVERSITY OF LIMPOPO
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triethoxysilyl-functionalized palladium complex immobilized on the surface of magnetite Fe3O4 coated with silica. The significant advantage of this catalyst is retained activity over a number of runs and magnetic recyclability. However catalyst preparation is complex and involves microwave heating and thus cannot be applied industrially. Suzuki couplings are usually carried out in organic solvents or aqueous organic mixed solvents. The chemical reaction involved is as follows: Fig 2.1: Suzuki Coupling
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Atrazine (1-chloro-3-ethylamino-5-isopropylamino-2‚ 4‚ 6-triazine‚ CAS: 1912-24-9) was purchased from Dr. Ehrenstorfer GmbH (97.7%‚ Germany). Ethyl acetate (99.8%‚ ANPEL Scientific Instrument (Shanghai) Co.‚ Ltd.) was used as solvent for standard solutions. Acetonitrile used as HPLC eluent was purchased from ANPEL Scientific Instrument (Shanghai) Co.‚ Ltd.‚ KH2PO4·12H2O‚ K2HPO4·2H2O‚ dichloromethane and other chemical reagents used in cultivated media were purchased from Sinopharm Chemical Reagent
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