Performance Liquid Chromatography Analysis of Aspirin Problem: Was aspirin (acetylsalicylic acid) successfully synthesized? Are there impurities or by-products present in the synthesized aspirin? How pure is the synthesized aspirin? Introduction: In the last experiment‚ aspirin was synthesized followed by characterization of the product using several different techniques. Melting point was a test that provided information about the identity and purity of the aspirin product. The iron(III)chloride
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Chemistry 104: Analysis of Commercial Antacid Tablets Hydrochloric acid (HCl) is one of the substances found in gastric juices secreted by the lining of the stomach. HCl is needed by the enzyme pepsin to catalyze the digestion of proteins in the food we eat. Heartburn is a symptom that results when the stomach produces too much acid (hyperacidity). Antacids are bases used to neutralize the acid that causes heartburn. Despite the many commercial brand‚ almost all antacids act on excess stomach
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Asa Philip Randolph Although‚ often looked over Asa Philip Randolph achieved extraordinary feats for the plight of the African American during his lifetime. Early involvement in the Socialist Party set the pace for his radical monthly magazine‚ the Messenger. With some experience with labor unions in New York‚ his first immense effort was the organization of the Brotherhood of Sleeping Car Porters. In 1941 he and two other colleagues suggested the March on Washington‚ to protest racial discrimination
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October 17 & October 24‚ 2012 How is Aspirin Made? This lab is about synthesizing aspirin using a hotplate to heat the reaction. It involved vacuum filtration‚ recrystallization‚ and comparing the properties of aspirin with salicylic aspirin. The first thing we did in this lab was make a hot-water bath by putting a beaker with water on a hot plate. After measuring out 2.1 grams of salicylic acid and 3 ml of acetic anhydride‚ we mixed the two together‚ along with 3 drops of sulfuric acid. We
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Tahanan ng Pag-asa Orphanage “Every Child Deserves a Happy Life” Brgy.18 Sinait Ilocos Sur Telephone #: 722-1008 Contact #: 09215600123 Manage by: Ms Arlyn S. Villegas Assistant Manage: Ms Divine R. Flores Secretary: Ms Precious Grace Arcenas Social Workers: Mrs Jovita Mangusan Liu Mrs Christina Sayon Caregivers: Ms Genelyn Aves Mrs Vivian Briones Ms Honeylou Cabrillas Ms Ivonne Calbario Mrs Amalia Caneda Mr Don Don Enriquez Mr Ike Labra Mr Eboy Martinez Mr Edwin Martinez Mr Tarex Pongcol
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is without a doubt‚ how the PC tablet market is divided. From the time we invested in researching the tablet market a very clear hierarchy has appeared with Apple iPad being the market leader at 56%‚ Amazon Fire at 14.3% and Samsung Galaxy Tab at 8% from 2011 Q4. To be able to take Amazon in to account we had to discard the Amazon Kindle Fire and replace it with the Amazon Fire on the grounds that the Kindle Fire is an e-reader and is not considered as a PC tablet. Previously the Amazon Fire was
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Abstract: The goal of this experiment was to synthesize aspirin. In this experiment aspirin‚ also known as acetylsalicylic acid‚ was synthesized from salicylic acid and acetic anhydride. In the reaction the hydroxyl group on the benzene ring in salicylic acid reacted with acetic anhydride to form an ester functional group. This method of forming acetylsalicylic acid is an esterification reaction. Since this esterification reaction is not spontaneous‚ sulfuric acid was used as a catalyst to initiate
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THE ASPIRIN ESSAY Write an essay as fully as you can in your own words‚ the websites shown below contain the information that you need to complete the essay. The information shown below must be present in your essay The impact of an organisation on society is important; the candidates in-depth study needs to include how the candidates’ chosen organisation: contributes to the economy; manages its waste materials; uses ICT in data management; controls energy consumption; makes demands
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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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THE RISE OF TABLET COMPUTERS In today’s digital world‚ tablet computers are the leading mobile devices for daily usage. Eagerness for buying a tablet is spreading around the world. In subways‚ in restaurants more and more people are seen with a tablet in the hand. Some of them play games‚ some navigate through the Internet. Today‚ most people prefer to buy a tablet computer instead of a notebook or netbook. The question is why people buy tablets? They are not cheap‚ relative to their notebook
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