Abstract For the amount of aspirin in a commercial tablet to be determined‚ different solutions of acetylsalicylic acid mixed with NaOH were created at different concentrations. All the different solutions were then analysed using Novaspec photometer‚ which allowed for a graph to be created and a line of best fit to be made. The amount of aspirin in a commercial tablet was found to be 350mg. Introduction The molecular formula for aspirin‚ also known as acetylsalicylic acid‚ is C9H8O4. It is most
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Synthesis of Aspirin Name: Xuanyi Li Teaching assistant: Deirdre Zwilling November 15‚ 2009 Purpose: To synthesize aspirin‚ a common analgesic drug‚ via nucleophilic acid-catalyzed substitution reaction of salicyclic acid with acetic anhydride. The whole reaction is catalyzed by phosphoric acid. (The experiment involved three parts: The synthesis of aspirin‚ the isolation and purification of aspirin‚ and the estimation of the purity of the final product.) [pic] Procedure[1]: A mixture
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Cisplatin Resources 1. M. H. Hanigan and P. Devarajan‚ “Cisplatin nephrotoxicity: molecular mechanisms‚” Cancer Therapy‚ vol. 1‚ pp. 47–61‚ 2003. 2. Santiago Gómez-Ruiz‚ Danijela Maksimović-Ivanić‚ Sanja Mijatović‚ and Goran N. Kaluđerović‚ “On the Discovery‚ Biological Effects‚ and Use of Cisplatin and Metallocenes in Anticancer Chemotherapy‚”Bioinorganic Chemistry and Applications‚ vol. 2012‚ Article ID 140284‚ 14 pages‚ 2012. 3. N/A 4. Santiago Gómez-Ruiz‚ Danijela Maksimović-Ivanić‚ Sanja
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Chromatography is a process used to separate mixtures. The word chromatography is derived from the Greek words ‘khroma’ and ‘graphein’ meaning ‘color’ and ‘to write’ or to represent. Although there are a couple different types of chromatography‚ in each case a substance is placed onto or into a medium and a solvent is passed through the test substance. In chromatography science‚ the solvent is called the mobile phase or the carrier fluid and the medium is called the stationary phase. There are four
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ANALYSIS OF ASPIRIN TABLETS The aim of this investigation is to determine the percentage by mass of aspirin aspirin present in different commercial preparations and to find out‚ which the best value is‚ using a neutralization reaction followed by a direct titration with NaOH. Chemicals Used: 100 ml of distilled water in a wash bottle 50 ml of 0.100 M NaOH 40 mL of 96% ethanol phenolphthalein as an indicator (3 drops per titration) 325 mg non buffered aspirin tablets Materials Used: One
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Introduction: The purpose of this lab was to learn how to use salicylic acid to make aspirin. Aspirin is the most widely used over-the-counter drug in the world. The average tablet contains about 325 milligrams of acetylsalicylic acid with an inert binding material such as starch. Aspirin is used to relieve pain‚ reduce inflammation‚ and lower fever. Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties‚ purified
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Chromatography Analysis of Black Pens to Determine Unknown Sample Purpose: Paper chromatography was performed on five different black pens‚ using four different solutions to determine which would be most appropriate to use on an unknown sample. Paper chromatography was then performed on the unknown sample to identify which pen was used to create it. Procedure: Each person participating in the analysis was assigned one solution to work with: V. Temple used distilled water‚ D. Sellers used
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Instructor: Ma ’am Lioanag Section: Civil Engineering 1-19 Date Performed: July 27 ‚ 2013 Group No.: 3 Date Submitted: August 3 ‚ 2013 Experiment No. 4 : PAPER CHROMATOGRAPHY INTRODUCTION The objective of this experiment was to resolve a given sample into its components by paper chromatography‚ to evaluate the retention factor of each component in the sample and to compare the relative solubility of the various components of a mixture of colors in a given solvent.
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their mouths and a happy‚ satisfied grin on their faces. The reason for conducting the research is to know how the colors of our favorite candy-coated sugary rewards came to be and that method of knowing is what we call “Candy Crhomatography”. Chromatography by definition according to Webster’s dictionary means “ a method for separating the constituents of a solution (gas or liquid) by exploiting the different bonding properties of different molecules”. In this case‚ the molecules being broken down
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Lab Report Synthesis and Characterization of Aspirin (Acetylsalicylic Acid) The Synthesis and Characterization of Aspirin (Acetylsalicylic Acid). Summary: In this experiment‚ we produced 4.21 g of acetylsalicylic acid. Our theoretical yield was calculated to be 5.22 g. Therefore our % yield was determined to be 80.6%. The experimental boiling point range of acetylsalicylic acid was found to be 130-132° C. The true melting point of acetylsalicylic acid is 135° C‚ therefore our percent
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