Abstract: The purpose of this lab is to synthesise acetylsalicylic acid (aspirin) by creating a reaction between acetic anhydride and salicylic acid. This was be accomplished through the use of recrystallization. Acetic anhydride and salicylic acid are mixed together‚ and then acidified by the addition of a few drops of concentrated sulfuric acid‚ which catalyzed the reaction. The percent yield is calculated to determine the effectiveness of the reaction in preparing the desired product (aspirin)
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Haloarenes Alcohols‚ Phenols & Ethers Aldehydes‚ Ketones & Carboxylic Acids Organic Compounds Containing Nitrogen Biomolecules Polymers Chemistry in Everyday Life The question paper will include value based question(s) to the extent of 3-5 marks. 162 DESIGN OF QUESTION PAPER CHEMISTRY (043) CLASS-XII – (2012-13) One Paper Unit No. Unit I Unit II Unit III Unit IV Unit V Unit VI Unit VII Unit VIII Unit IX Unit X Unit XI Unit XII Unit XIII Unit XIV Unit XV Unit XVI Title Solid State Solutions Electrochemistry
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Isopentyl Acetate Synthesis Results: Crude % Yield Calculation Reaction: H2SO4 C2H4O2(aq) + C5H12O(aq) ----> C7H14O2(aq) + H2O(l) (1 mole of acetic acid reacts with 1 mole of isopentyl alcohol to make 1 mole of isopentyl acetate and 1 mold of water) Volume of isopentyl alcohol (d=0.809g/mL; MW=88.15g/mol): 2.5mL Moles of isopentyl alcohol: (2.5mL)(0.809g/1mL)(1mol/88.15g) = 0.02294mol Volume of glacial acetic acid (d=1.06g/mL; MW=60g/mol): 3.5mL Moles of glacial
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Critical Synthesis Urban Sociology introduced students to five seminal texts from the field. While studying cities (and their surrounding areas)‚ and their political‚ economic‚ and social institutions‚ it is important to understand the key themes covered in these books: contested space (both for the arenas of land development and redevelopments as well as for various geopolitical interests); residential segregation; poverty; inequality (and the roles that government agencies play in exacerbating
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Synthesis of Methyl Salicylate from Aspirin Esters are a class of organic compounds. An ester compromises an organic or inorganic acid in which one or more hydroxy (OH) groups have been replaced by and alkoxy (O-alkyl) group. For example‚ the simplest ester‚ methyl formate (CHOOCH3)‚ is made up of formic acid (CHO-OH) in which the hydroxyl group has been replaced by a methoxy group (-OCH3). Similarly‚ ethyl acetate (CH3CO-OCH2CH3) is made up of acetic acid (CH3CO-OH) in which the hydroxy group
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Two common theories about dreams are the Freudian theory that dreams are repressed desires and Hobson’s activation-synthesis theory that dreams are the result of random brain stem circuits actively overwhelming the cerebral cortex (Pinel‚ 2007). The two common sleep theories that attempt to address the purpose of sleep and sleep habits: recuperation and circadian. Recuperation
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Synthesis The Tell-Tale Heart‚ and The Cask of Amontillado “The Cask of Amontillado” and “The Tell-tale Heart”‚ has a setting in the mid 1800’s‚ where the narrator in each stories killed another character‚ hid their victims and leaving no evidence behind. But both of these stories don’t end the same‚ one of these stories‚ the murder gets away‚ and the other faces his consequences. In “The Cask of Amontillado”‚ Montresor tells the story of the day that he took his revenge on Fortunato‚ because
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Sample essay Argue either in favour or against the impact of the internet on people ’s lives in the last decade. As an avenue of entertainment and communication‚ and as a research and reference tool‚ the internet has had a huge impact on the modern societies of developed nations. At the same time‚ there is concern that the disadvantages and negative influences may outweigh the benefits to the society. This essay argues that‚ in the last decade‚ the advantages of the internet far outweigh the
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Set 7 Ap English Set 7 Ap English Television in Presidential Elections Synthesis Essay The United States have adapted television into presidential elections since the 1960s. However the influence on America is not necessarily positive. The negative influence of television on the United States can be conveyed though the necessity of perfect image by candidates‚ sharing of too personal facts‚ and the brutality of the television debate. Television has negatively affected presidential debates
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Activity 1.7.2 Synthesis of Esters Purpose- the Purpose of this lab is to synthesize Esters by combining Carboxylic Acid and Alcohols. In this lab we will synthesize and then detect the odour of Esters formed. Materials- Materials that will be used in this lab are as follows:- Ethanol 7. Acetic Acid Eye Protection 11. Test tube rack Procedure- Prepare a hot-water by half filling a 500-mL beaker with water and heating it carefully on a hot plate until it comes to a gentle
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