Introduction: The theory behind the extraction of a solution containing benzoic acid‚ cellulose‚ and methyl orange involves many components pertaining to the fundamental ideas of solubility and polarity. Using the concepts of like dissolving like and acid base reactions‚ a solution of organic acid (benzoic acid)‚ a water soluble compound cellulose‚ and an organic soluble compound methyl orange‚ can be separated and benzoic acid can be isolated by a method of extraction. At the fundamental
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Observations * all literature values were obtained at www.sigmaaldrich.com Chemical Volume (mL) Mass (g) Density (g/mL) Molecular Weight (g/mol) Methyl-3-nitrobenzoate - 0.1178 - 181.15 Methyl benzoate 2.00 - 1.088 136.00 Sulfuric Acid 0.60 - 1.840 98.08 Nitric Acid 0.15 - 1.510 63.01 Chemical MP Exp. (°C) MP lit (°C) Methyl-3-nitrobenzoate 72.6-75.7 78.0-80.0 Mmole Calculations: HNO3 (16M)- 0.15 mL* (0.016 mole/mL) = 0.0024 mole* (1000 mmol/mole) = 2.4 mmoles
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Triphenylmethanol Aim The aim of this experiment was to prepared Grignard reagent (phenylmagnesium bromide) from bromobenzene and magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction Formation of long hydrocarbon
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Introduction Extraction is a purification technique used in organic chemistry to separate compounds from a mixture of two or more compounds. There are three different extraction techniques: liquid-liquid extraction‚ solid-liquid extraction and chemically active extraction. All three types of extraction follow the same principle. Organic molecules dissolve in organic solvents and polar molecules dissolve in aqueous solvents. This phenomenon is observed because of the intermolecular forces between
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used. The reaction between alcohols and carboxylic acids will produce esters. Apparatus: Stopper‚ dropper‚ test tube‚ stopwatch‚ water bath‚ measuring cylinder (10ml) Chemical Reagents: Ethanol‚ n-Butanol‚ 2-Butanol‚ Alcohol X‚ Lucas reagent‚ 2-methyl-2-propanol‚ Concentrated H₂SO₄‚ 0.04 M Na₂Cr₂O₇‚ Glacial acetic acid Procedure (a) Lucas
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of being a derivative of these organic acids. Esters can be prepared by the reaction of carboxylic acids and alcohols‚ with an inorganic acid used as a catalyst which is dubbed esterification. With o-hydrobenzoic acid‚ or salicylic acid‚ we are able to create acetylsalicylic acid otherwise known as aspirin as well as methyl salicylate‚ which is a component of oil of wintergreen. Both of which are used for pain relief/soreness. Salicylic acid is a member of the phenol class as their hydroxyl group
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Fischer Esterification Kyle Peterson Chem. 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
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Time Corrected Ret. Time 1 0.720 0 2 1.088 0.368 Chloride: 9.0 mL Petroleum Ether: 3 mL Diethyl Carbonate: 0.250mL Methyl Benzoate: 0.250mL Table 4: GC 2
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formation of ASA. It is an organic acid anhydride and like most acid anhydrides‚ acetic anhydride is non-polar. Organic acid anhydrides is a organic compound that has 2 acyl groups bonded to the same oxygen atom. It is produced by the carbonylation of methyl acetate. When reacting acetic anhydride with aromatic rings an acid catalyst is usually used to speed up the
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Synthesis of Methyl Salicylate from Aspirin Esters are a class of organic compounds. An ester compromises an organic or inorganic acid in which one or more hydroxy (OH) groups have been replaced by and alkoxy (O-alkyl) group. For example‚ the simplest ester‚ methyl formate (CHOOCH3)‚ is made up of formic acid (CHO-OH) in which the hydroxyl group has been replaced by a methoxy group (-OCH3). Similarly‚ ethyl acetate (CH3CO-OCH2CH3) is made up of acetic acid (CH3CO-OH) in which the hydroxy group
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