Point A. Abstract Aspirin is the common name for the compound acetylsalicylic acid‚ widely used as a fever reducer and as a pain killer. The first part of the experiment aims to synthesize aspirin from the reaction of salicylic acid with acetic anhydride with the aid of phosphoric acid as a catalyst. The second part of the experiment aims to assess the purity of aspirin through the determination of its melting point and comparing it to the accepted value. An oil bath was used in the determination
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the formula -C(=O)OH‚ usually written as -COOH or -CO2H. Carboxylic acids are Brønsted-Lowry acids because they are proton (H+) donors. They are the most common type of organic acid. Among the simplest examples are formic acid H-COOH‚ which occurs in ants‚ and acetic acid CH3-COOH‚ which gives vinegar its sour taste. Acids with two or more carboxyl groups are calleddicarboxylic‚ tricarboxylic‚ etc. The simplest dicarboxylic example is oxalic acid (COOH)2‚ which is just two connected carboxyls. Mellitic acid is
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Alcohol Acetic Anhydride Concentrated H2SO4 Saturated NaHCO3 NaCl solution Reflux Setup: The reflux setup contains a condensing system at a 90-degree angle with the flasks that prevents the solvent from evaporating but at the same time maintaining the temperature of the solvent. The 90-degree angle allows condensed solvent to go back to the reaction pot. PROCEDURE Two dry test tubes labelled A and B containing the required 2.5 mL isoamyl alcohol and 2.6 mL acetic anhydride respectively
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Mary Eunice Agapito‚ Denmarc R. Aranas*‚ Limuel Joseph V. Bacani‚ and Steven Arthur Baluyot Analysis of Hydrocarbons Department of Biology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract In this experiment we performed parallel chemical test method to identify an unknown. The reflux setup was used to prevent evaporation in mixing the reactants in an inert solvent with its boiling point. Another highlight of this experiment is the liquid-liquid extraction wherein a solution containing
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the aldol condensation which is followed by elimination. In this reaction E and Z isomers of phenylcinnamic acid are created using benzaldehyde and acetic anhydride. The intermediate product is acetic phenyl acetic anhydride. Benzaldehyde is an aromatic compound that Results: The reaction involves the use of benzaldehyde with acetic anhydride which gave the phenylacetic acid which would be used with in the farther steps of the reaction to produce the E and Z phenylcinnamic acid. The mechanism
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toxic substance phenol when metabolized. Felix Hoffman and Arthur Eichengrün first synthesized the active ingredient in aspirin‚ acetylsalicylic acid‚ in 1893 Experimental: - Placed 2.06g of salicylic acid in Erlenmeyer flask - Added 5ml of acetic anhydride to Erlenmeyer flask via 10ml beaker - Added 5 drops of hydrochloric acid to Erlenmeyer flask via dropper - Dissolved the salicylic acid by swishing the solution around in a clockwise manner - The solution looked white in color‚ the solution
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isopentyl alcohol (1.0 mL) and excess glacial acetic acid(1.5 mL‚ 17.6M) were eppendorf pipetted into a 5 mL conical vile. This mixture was acid catalyzed by the addition on two drops of H2SO4. The mixture was then heated to 150-160⁰C in order to increase energy for esterification to occur over a period of 60- 75 minutes. The mixture then was cooled to room temperature before the addition of 5% aqueous sodium bicarbonate( 1.0 mL) in order to react excess acetic acid to form a the anionic form sodium
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EXP-10 CHEM 233L SYNTHESIS OF p-BROMOANILINE Introduction: In this experiment‚ p-bromoaniline was synthesized in three steps starting from aniline. Since the amino group of aniline is a strong activator of aromatic ring‚ direct bromination is impractical (equation 1). In order to make a desired product‚ amino group needed to be protected as the acetamide which also maintained ortho and para position but slowed down the rate of reaction (equation 2). Slow reaction rate would increase
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of Carboxylic acids in 10% NaHCO¬3 Acetic acid - formation of bubbles Benzoic acid - formation of bubbles Test for Acetic acid NaOH + Acetic acid - blue litmus paper turned red NaOH + Acetic acid + FeCl3 - red colored solution Test for Benzoic acid Benzoic acid + NH3 - red litmus paper turned blue Benzoic acid + NH3+ FeCl3 - orange precipitate/ flesh-colored precipitate formed Formation of Esters a. From Carboxylic acids Acetic acid + ethanol + H2SO4 - produced a sweet
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ACETIC ACID BY THE CHIYODA/UOP ACETICA™ PROCESS Aspen Model Documentation Index • Process Summary • About This Process • Process Definition • Process Conditions • Physical Property Models and Data • Chemistry/Kinetics • Key Parameters • Selected Simulation Results: Blocks Streams • References PEP Process Module 1 19 Aug 1999 SRI Consulting Process Summary This Aspen Plus model simulates the production of acetic acid by low pressure methanol
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