Titration- Analysis of Aspirin Tablets Objective: Determine the percentage of aspirin (acetylsalicylic acid) present in two different commercial tablets by titrating the solution with a base. Also determine whether the aspirin is a strong or weak acid according to the Bronsted- Lowry and Lewis theories and deduce the formula of the acid- base reaction. Independent Variable: The amount of base (NaOH) in moles that are needed to neutralize the solution. Dependent Variable: Percentage of aspirin (acetylsalicylic
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Experiment 22: Synthesis of Aspirin and Oil of Wintergreen Performed 01/31/2013 Received 02/07/2013 Organic molecules have a wide range of applications occur both intracellular as well as in many different industries. The reactions use the reactivity of functional groups attached to organic molecules‚ as well as general chemistry concepts such as Le Chatelier’s Principle (). The synthesis of Aspirin (its chemical name being acetylsalicylic acid) and of oil of wintergreen (with its chemical
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PREPARATION OF ASPIRIN AND DETERMINATION OF THE MELTING POINT Ferrer‚ Lara Melissa V. Faculty of Engineering University of Santo Tomas Manila‚ Philippines ABSTRACT This experiment involved three steps: synthesis of aspirin‚ isolation and purification‚ and the estimation of purity of the final product. The synthesis involved the reaction of salicylic acid and acetic anhydride in the presence of a catalyst‚ phosphoric acid‚ H3PO4. When the aspirin was prepared‚ it was isolated and filtered. The percentage
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diabetes but no other major risk factors for heart disease probably should not be on low-dose aspirin therapy‚ new research suggests. The new recommendations are based on close examination of nine studies that found the risks of some aspirin side effects‚ such as stomach bleeding‚ should be better balanced against the possible benefits of using aspirin. The larger theme here is that use of low-dose aspirin to prevent heart attacks in people who have not already experienced one is probably not as efficacious
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SINGAPORE POLYTECHNIC SCHOOL OF CHEMICAL AND LIFE SCIENCES Diploma in Applied Chemistry with Pharmaceutical Science Organic Chemistry (CP4120/CP4502) Project Preparation and Recrystallisation of Aspirin. AY2010/2011 Name: XXXX Class: DACP 1B/02 Admin no.: P1234567 Table of Contents Page List of illustration
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Acetylsalicylic Acid (Aspirin) Synthesis Telow‚ AJV Sumicad‚ CJ‚ Tavanlar‚ EMMT‚ Chem 40.1‚ Institute of Chemistry‚ University of the Philippines Los Baños I. Introduction Organic synthesis is the process where a desired organic compound is constructed or prepared from commercially available materials. The objective of organic synthesis is to design the simplest synthetic routes to a molecule. Aspirin‚ also known as acetylsalicylic acid is as salicylate drug often used as analgesic
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ANALYSIS OF ASPIRIN: SPECTROPHOTOMETRY The purpose of this experiment is to evaluate the percent aspirin on a commercial aspirin tablet using an instrumental method‚ spectrophotometry. In a spectrophotometer‚ light from a strong lamp passes through a monochromator‚ which breaks the light into its component colors using a grating‚ then uses mirrors and slits to direct a light beam of the desired wavelength through the sample compartment‚ where you place a tube (cuvette) of solution. A detector
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October 9‚ 2013 Partner(s): Acetylsalicylic Acid Synthesis Theory. This experiment was carried out to see how the hydroxyl group on the benzene ring in salicylic acid reacts with acetic anhydride to form an ester‚ and to make aspirin. Synthesis of Acetylsalicylic Acid occurs by protonation of carbonyl (C=O) group‚ and a nucleophilic attack of OH on the acetic anhydride. The ferric chloride test and melting point were used to test the purity of the results. A hypothesized recovery rater of above
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EXP. NUMBER EXPERIMENT/SUBJECT DATE 1 NAME Organic Chem 2 Lab LOCKER NO. 2/29/00 COURSE & SECTION NO. 1 John Doe (TA: Gregg N. Yard) 55 chem 3341-111 The Preparation of Aspirin The purpose of this experiment is to synthesize aspirin (acetyl salicylic acid) from salicylic acid and acetic anhydride. CO2H OH salicylic acid 2g 0.014 mole O O O CH3 H2SO4 ethyl acetate CO2H O O acetyl salicylic acid acetic acid CH3 O + H3C + H3C OH acetic anhydride 5
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Experiment 4 Synthesis of Salicylic Acid Introduction Throughout history‚ botanical extracts have been used as medicines. Approximately 30% of all medicines have a plant origin. This number increases to 60% if you consider medicines that at one time were derived from plants‚ but have been synthesized in the laboratory. Salicylic acid is a white crystalline compound that can be isolated from the bark of birch trees. Since it is a valuable substance that can be isolated from nature‚ it is called
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