Mapua Institute of Technology School of Chemical Engineering and Chemistry Muralla St.‚ Intramuros‚ Manila Melting Point and Boiling Point of Organic Compounds Group No. 5 Manacup‚ Cris Vincent L. Oblena‚ Adrian D. Ong‚ Joshua Jyro B.* *Leader ABSTRACT In compounds‚ two of the physical properties affected by the varying structures are melting point and boiling point. Through the use of the Thomas-Hoover Melting Point Apparatus or the micro method‚ the melting and boiling point of
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purity of aspirin by adding Iron (III) chloride to the product. Hypothesis: I hypothesize that salicylic acid will react with acetic anhydride to produce acetylsalicylic acid (aspirin) and acetic acid (vinegar). Variables: Independent and controlled variables: The amount of sulfuric acid used for catalysis and the amount of salicylic acid and acetic anhydride. Dependent variables: Theoretical and actual yield of aspirin. Constant variables: Two beakers filled with 200 mL of water for the
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In the first part of this experiment acetic anhydride was used to prepare acetanilide which could then be readily brominated to form a mono-brominated product‚ with the bromine positioned at either the ortho‚ meta or para position on the aromatic ring. Acetic anhydride is very reactive towards nucleophiles and this reactivity is the result of the difference in electronegativities of the carbon and oxygen atoms that are bonded in acetic anhydride. This difference in electronegativities causes one
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consumption of one half of an aspirin tablet per day can help to prevent heart attacks and strokes. Aspirin can be synthesized by the esterification of salicylic acid via reaction with acetic anhydride. A few drops of phosphoric acid are added to serve as a catalyst for the reaction. The use of acetic anhydride as a reactant‚ instead of acetic acid‚ results in a rapid and irreversible conversion of salicylic acid to acetylsalicylic acid. Experimental Procedure: Synthesis of acetylsalicylic
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ranged from about 77 degrees in fraction 1 to about 89 degrees in the fraction 10. Next‚ the toluene stayed relatively the same temperature throughout the first 6 fractions at around 69 degrees and then drastically shot up to 100 degrees by the end of fraction 10. This is due to hexane having a lower boiling point and being able to steadily increase through each fraction evenly as temperature rises while the toluene‚ because of its higher boiling component‚ needed the higher temperature in order for higher
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EXERCISE 11 Synthesis of Aspirin (Acetylsalicylic Acid from Salicylic Acid) RAQUID‚ Rency J Group 5 18L I. Introduction Due to the demand of certain reagents in the laboratory in order to perform and conduct further experiments or produce essential compounds‚ chemists continuously develop organic synthesis. This process aims to prepare and synthesize desired organic compounds from commercially or readily available ones by providing the simplest route in synthesizing the compound
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acetylation of aniline with acetic anhydride. The crude acetanilide was dissolved in a solvent in a heated water bath. The solution was cooled slowly in an ice bath as crystals form out. As the compound crystallizes from the solution‚ the limiting reagent Aniline and the percent yield of 96% was obtained. Introduction: This experiment involves four functional groups common in organic chemistry. The substrate (reactants) which are Aniline and Acetic anhydride are both liquids and one of the products
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HITLERS RISE TO POWER (1923-1934) Author -*Simon lugwisha* INTRODUCTION Adolf Hitler’s rise to power began in Germany in September 1919] when Hitler joined the political party known as German Workers’ Party the name was changed in 1920 to the National Socialist German Workers’ Party‚ commonly known as the Nazi Party. This political party was formed and developed during the post-World War I era. It was anti-Marxist and was opposed to the democratic post-war government of the Weimar Republic
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come which will be discussed in great detail below. The process of the lab included two acid-catalyzed reactions (using BF3(MeOH) and H2SO4).‚ and two catalyzed with bases (anhydrous sodium and pyridine). Salicylic acid was combined with acetic anhydride in four test tubes‚ and one of the four catalysts was added to each. The reactions were monitored and timed to track their rates‚ and then all four test tubes were combined‚ washed in water solution‚ and the aspirin produced was massed. Equation
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stated earlier‚ salicylic acid is derived from metabolized salicin. Acetic Anhydride Acetic anhydride is the other reactant in the formation of ASA. It is an organic acid anhydride and like most acid anhydrides‚ acetic anhydride is non-polar. Organic acid anhydrides is a organic compound that has 2 acyl groups bonded to the same oxygen atom. It is produced by the carbonylation of methyl acetate. When reacting acetic anhydride with aromatic rings an acid catalyst is usually used to speed up the
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