243a Matt Judd‚ Sec. 25 Date Performed: 10/15/03 Abstract: The objective of this experiment is to efficiently perform a fischer esterification of 1-Hexanol to form water and hexyl acetate‚ and to confirm the esterification with a nuclear magnetic resonance (NMR) spectroscopy. It was found that 0.3963 grams hexyl acetate was formed with a percent yield of 33.2%. The product was confirmed using NMR‚ IR‚ and boiling point confirmation. Backround: A Fischer Esterification is the formation of an ester
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Bacterial Fermentation Secondary article Article Contents Volker Mu¨ller‚ Ludwig-Maximilians-Universita¨t Mu¨nchen‚ Munich‚ Germany . Introduction Under anaerobic conditions‚ in the dark and in the absence of electron acceptors‚ organic compounds are catabolized by strictly anaerobic or facultatively anaerobic bacteria by internally balanced oxidation–reduction reactions‚ a process called fermentation. In fermentation‚ the organic compound serves as both electron donor and acceptor‚ and adenosine
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intermolecular forces that can be present in a solution are london dispersion forces‚ dipole-dipole force‚ hydrogen bonding and ion-dipole forces. In this experiment the substances that were used were acetone‚ methanol‚ water‚ 1- butanol and ethyl acetate. Acetone is the organic compound with the formula (CH₃)₂CO. It is a colorless‚ volatile‚ flammable liquid‚ and is the simplest ketone. It takes 21 seconds for it to completely disappear. It was the first to evaporate among all tested substances. The
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and ester formed. Hypothesis For test tube A I hypothesized that the final ester would be 2-methylpropyl formate. For test tube B I hypothesized the final ester would be octyl acetate. For test tube C I hypothesized it would be methyl salicylate. For test tube D I hypothesized it would be isopentyl acetate. Materials and Methods Apparatus 4 test tubes Test tube rack Graduated cylinder (10 mL) 150 mL beaker 250 mL beakers (2) Hot plate Thermometer Safety glasses Beaker tongs
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Glen Huang Period 9 Synthesis of Isopentyl Acetate Purpose: To prepare isopentyl acetate from isopentyl alcohol and acetic acid by the Fischer esterification reaction. Materials: West condenser‚ 250 mL round bottomed flask‚ two 250 mL flasks‚ heating mantle‚ boiling chips‚ graduated cylinder‚ sodium bicarbonate‚ isopentyl alcohol‚ glacial acetic acid‚ concentrated sulfuric acid‚ separatory funnel Procedure: 1. Place 50 mL of isopentyl alcohol in a 250 mL round bottom flask and add 60 mL
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based on carbon. The vast majority of chemical compounds are organic. S.No | Name of the chemical compound | Formula | 1 | Acetic acid formula | CH3COOH | 2 | Hydrochloric acid formula | HCl | 3 | Sulfuric acid formula | H2SO4 | 4 | Acetate formula | CH3COO- | 5 | Ammonia formula | NH3 | 6 | Nitric acid formula | HNO3 | 7 | Phosphoric acid formula | H3PO4 | 8 | Sodium phosphate formula | Na3PO4 | 9 | Calcium carbonate formula | CaCO3 | 10 | Ammonium sulfate formula | (NH4)2SO4
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Introduction Esters are among the most widespread of all naturally occurring compounds. Many simple esters are pleasant-smelling liquids that are responsible for the fragrant odors of fruits and flowers. Examples are benzyl acetate‚ which is finding in orange oil‚ and isopentyl acetate‚ which is the part of banana oil. The ester linkage is also present in animal fats and in many biologically important molecules. Esters can be formed from both organic and inorganic acids and the process of producing
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Process Description Acetaldehyde is produced via dehydrogenation of Ethanol. The reaction is as below: CH3CH2OH CH3CHO + H2 ‚ ΔH = +82.5 kJ/mol Besides the main reaction producing Acetaldehyde‚ there are three side reactions present in the reactor‚ as shown below: 2 CH3CH2OH CH3COOC2H5 + H2 2 CH3CH2OH CH3(CH2)3OH + H2O CH3CH2OH + H2O CH3COOH + H2O The feed of 90% Ethanol is kept in a storage tank with an air vent. Tank blanketing is used in the storage tank with Nitrogen gas. This
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of the extract that scavenges 50% of the ABTS•+. The ABTS•+ scavenging abilities of the crude extract as well as the ethyl acetate fraction and its sub-fractions are presented in Table 2. For the solvent partitioned fraction‚ a similar trend to the DPPH• scavenging results was observed in the ABTS•+ scavenging activity‚ with the highest activity being found in the ethyl acetate fraction (IC50 = 61.0 _g/ml)‚ which was 3.7 times lower than those of the crude ethanolic extract (IC50 = 223.2 _g/ml). The
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CHM 116 Lab Investigations of Buffers I. Purpose The purpose of this experiment was to get an understanding as to how to properly prepare chemical buffers. Also part of this experiment was to gauge the effectiveness of the buffers by measuring their pH levels in various titration solutions‚ using a pH meter. II. Procedure To start our experiment we had to prepare Buffer B‚ which was the .060 M Ammonia/Ammonium solution. Using 3.0 M ammonia‚ we had to calculate
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