distillation -- and was characterized by its boiling temperature and its refractive index. Esterification is a condensation reaction where two molecules are joined together to form a larger molecule with the simultaneous loss of water. This ester in this experiment is isopentyl acetate formed from acetic acid and isopentyl alcohol. The reaction is catalyzed by hydrochloric acid‚ a Fisher esterification process‚ (McMurry‚ p780-781) but the catalyst affects only the rate of reaction‚ and not the
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wintergreen oil. In this experiment the salicylic acid is reproduced using methyl salicylate‚ the major constituent of wintergreen oil and later compared to salicylic acid made from benzene. The purpose of this lab is to determine the difference between salicylic acid made from methyl salicylate and salicylic acid made from benzene comparing the melting points of the two samples. II. Reactions and Properties M.W. m.p. b.p. d Methyl salicylate 152.1 -8 223 1.174 Salicylic acid 138.1 159 III
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reactions which is strong acid-weak base titration and weak acid-strong base titration will be investigated. Materials Chemicals 0.1M Hydrochloric acid‚ 0.1M acetic acid‚ 0.1M sodium hydroxide‚ 0.1M ammonium hydroxide‚ phenolphthalein‚ screened methyl orange‚ methyl orange Apparatus 100mL Beakers‚ 250mL Conical flasks‚ 50mL Burettes‚ 25mL Pipettes‚ Pipette fillers‚ Funnels‚ pH meters Procedure The experiments are carried out according to the procedures that stated in Experiment (1): Investigation of the
Free PH indicator Titration PH
Experiment Date: 3/12/2012 Photochemistry: Photoreduction of benzophenone and rearrangement to benzpinacolone Abstract: In this experiment Benzpinacolone was synthesized in a process that contained two steps. First the photoreduction of benzophenone in 2-propanol‚ which was done by placing the flask under sunlightfor the absorption of the UV rays to carry out the reaction. Then the second part was the dehydration of benzpinacol to benzpinacolone‚ where the benzpinacol product was converted
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benzene‚ propanoic acid‚ 3-methyl-1-butanol‚ 2-methyl-1-butanol‚ butanoic acid‚ 2-methyl butanoic acid‚ 3-methyl butanoic acid‚ 4-methyl pentanoic acid‚ phenol and benzaldehyde. It has been reported that TMA‚ benzaldehyde and 4 to 7 carbon chain acids are the most important contributors to the aroma of fish sauce. 3-Methylbutanal and 2-methylbutanal were also present at concentrations greater than their thresholds of 0.2 and 3 ppb‚ respectively [14‚15]‚ in addition 2-methyl and 3-methylbutanal‚ dimethyldisulfide
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Abstract By adding HCl to 2-methyl-2-butanol‚ through the Sn1 mechanism‚ 2-chloro-2-methylbutane is formed. Water‚ sodium bicarbonate and NaCl(aq) were then added to the 2-chloro-2-methylbutane to remove any of the excess water from the reaction. To confirm‚ a successful reaction‚ AgNO3 was added to the 2-chloro-2-methylbutane. A white precipitate formation confirmed a successful Sn1 reaction. Introduction Nucleophilic substitution reactions such as Sn1 and Sn2 allow us to convert one functional
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or tertiary (3° ). If the OH is bonded to only one other carbon‚ it is a primary alcohol (eg. 1-butanol); if bonded to two other carbons‚ it is a secondary alcohol (eg. 2-butanol); if bonded to three other carbons‚ it is a tertiary alcohol (eg. 2-methyl-2-propanol). Due to the placement of the hydroxyl functional group in each of the degrees of alcohol‚ the reactivity of each should be impacted. This means that all three alcohols should have a different level of reactivity. The hydrogen atom
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name for A) 3-Methyl-4-hexyne B) 4-Methyl-2-hexyne C) 2-Ethyl-3-pentyne D) 4-Ethyl-2-pentyne E) 3-Methyl-2-hexyne 3. What is the IUPAC name for this compound? A. cis-1-ethyl-2-methylethene B. trans-2-pentene C. 1-methyl-butene D. trans-methylbutene E. cis-2-pentene *4. A correct IUPAC name for the following compound is: A) 3‚6‚7-trimethyl-4-bromo-1-octene B) 4-bromo-3-methyl-6-isopropyl-1-heptene
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These polymers can be viewed as either PE with exclusively methyl branching‚ or copolymers of ethylene and propylene. These materials were synthesized in two forms: (1) homopolymers having methyl branches at precise increments‚ and (2) random copolymers with 1‚9-decadiene with a statistical distribution of methyl branches along the PE backbone. The thermal properties of these two materials are distinctly different. The precisely spaced methyl-branched ADMET polymers display a much sharper melting transition
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natural resources such as wintergreen oil or can be synthesized. Through a series of chemical reactions with cheap raw materials beginning with beginning with methyl salicylate and‚ it is a cheaper and more efficient method of making salicylic acid from natural resource of benzene. The purpose of the experiment is to prepare salicylic acid methyl salicylate‚ and compare it to the one already made naturally from benzene to determine any differences
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