Preparation of Acetylsalicylic Acid Abstract Acetylsalicylic acid was prepared using salicylic acid and acetic anhydride. As a result‚ a white‚ powdery substance was formed (0.1931g‚ percent yield 91.30%) and was defined by melting point (124.5 – 134.5°C) and observation of color change with ferric chloride. Introduction Acetylsalicylic acid (aspirin) is one of the most popular analgesic drugs on the market today. It also acts as an antipyretic and anti-inflammatory drug. Salicylic acid itself
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Chemistry 261 Practical Report Practical 2 Thermos Thurman 211526893 PRACTICAL 2: Preparation of sodium hexanitrocobaltate (III) Date: 12 March 2014 INTRODUCTION Sodium hexanitrocobaltate (III) is a coordination complex which has the formula Na3[Co(NO2)6]. This compound is yellow in colour. It consists of a central Co3+ ion surrounded by six nitro ligands [1]. This compound is used as a qualitative test for potassium and ammonium ions (so long as certain
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Lab 5: Preparation of Synthetic Banana Oil September 20th‚ 2012 Purpose: The main purpose of this experiment was to synthesize banana oil (isopentyl acetate.) Ester are often prepared by the Fischer esterification method‚ which involves heating a carboxylic acid with an alcohol in the presence of an acid catalyst. Theory: Synthesize isopentyl acetate by combining isopentyl alcohol with acetic acid and sulfuric acid and then heating the reaction mixture under reflux for an hour. The alcohol
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Una parte de los estudios de la historia de la tecnología plantea que el desarrollo y perfeccionamiento de lo artificial depende únicamente de las necesidades que van surgiendo con la evolución biológica humana. Parte de esta evolución dio origen a las diversas disciplinas y oficios que en un pasado determinaban‚ distinguían y nombraban a las personas que ofrecían sus servicios y conocimientos a la comunidad con la que convivían (herrero‚ carpintero‚ etc.). Pero‚ en un momento de la historia‚ la
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Persuasive Speech Preparation Outline 5110719032 张孟劼 HEADER Title: We must end our addiction to social networking. General purpose: To persuade Specific Purpose: To persuade my audience that actions need to be taken to stop the addiction to social networking. Thesis Statement: Being too addicted to social networking can cause some serious problems‚ so it is necessary to stop it. Main Points: Ⅰ.Addiction to social networking has caused serious problems
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Los San Patricios‚ the Saint Patrick’s Battalion‚ was a Mexican army unit made up primarily of Catholic Irish and German immigrants‚ even though some also came from Canada‚ England‚ France‚ Italy and Mexico. When Irish immigrants came to the US‚ many joined the Army. Conditions in the Army were harsh‚ but more so for many Irish and other immigrants. Facing discrimination many soldiers made the decision to defect. Led by John Riley‚ those soldiers that defected joined the Mexican Army‚ creating
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modern‚ will make the Delhi Games special. Right now what you see and really experience are the infra structural changes that are taking place‚ to be honest‚ on daily basis. But now we even have news from across the country informing us about the preparation of athelets. As in the words of Indian sports minister Suresh Kalmadi‚ "The colour‚ costumes‚ the traditions and heritage will be world class‚ the public will be welcoming and friendly and the flair of India is what will make the next Games really
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The sports community now recognizes that mental factors such as confidence‚ composure‚ focus‚ and motivation are highly significant to athletic performance. As a result‚ over the year’s performance enhancement has become an emerging career track within the field sport psychology. Sport psychology (or sports psychology) is the study of the psychological factors that affect participation and performance in sports. Sport psychology professionals who focus on performance enhancement aim to increase athletic
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Image Presentation – Los Funerales de Atahualpa “Los Funerales de Atahualpa” or in English‚ The Funeral of Atahualpa‚ was painted by the famous Hispanic artist‚ Luis Montero. According to a press release on the artwork by the “Congreso de la Republica del Peru‚” the painting depicts a true historical event of several Incan women dramatically interrupting the funeral ceremony of their assassinated Atahualpa king. The Spanish conquistador‚ Francisco Pizarro‚ and his men are performing the Christian
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that people of different social backgrounds lead increasingly separate‚ parallel lives. Los Angeles is a manifestation of Park and Merkel’s commentaries‚ where people from all walks of life share micro-spaces. Even though they may cross paths and share certain spaces on a consistent basis‚ it does not mean they live identical lives. Furthermore‚ difference matters in the places and spaces of the contemporary Los Angeles region and the nature of interaction that occur in such micro-spaces.
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