EXPERIMENT A PREPARATION OF ASPIRIN Abstract This report gives a detailed account of the experimental preparation of aspirin in a laboratory environment as well as some basic industrial background on the product. It also contains information about safety precautions put in place to ensure the safety of the team who carried out the experiment. All results obtained have been included as well as a detailed analysis of what they represent alongside any improvements to the method used. Introduction
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For a second means of visualization‚ iodine vapor will be used Hypothesis I predict that the polar substance will be close to the surface but ‚the nonpolar substance will move along with the solvent. Reaction /setup. Reagent>> Reagent Molar mass Poiling point Melting point Density Refractive index Safety Data methylene chloride 84.94 g/mol 40 C -97C 1.325g/cm3 Flammable Ethanol 46.07g/mol 78.3C -117.3C 789.0kg/m3 Flammable Acetaminophen 151.16g/mol
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-1Determination of an Unknown Liquid (2-butanol) Through Fundamental Analysis Lee Billips Department of Chemistry‚ Shippensburg University‚ 1871 Old Main Drive. Shippensburg‚ PA‚ 17257. Abstract: The identification and characterization of unknowns are an important part of organic chemistry. It is fundamental to know experimental methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96
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The live frog would be placed inside the bottle and will amend itself in such a way that its nose remains above the kerosene layer. Concurrently‚ a reagent bottle would be filled with water and have a layer of kerosene on the surface. This will serve as the control. A vial containing NaOH together with filter paper saturated with alkali will be placed into the animal chamber. A bent tube would be is
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the solutions in an ice bath. Pure acetanilide was the product after the second crystrallization which was obtained by finally removing the impurities through filtration. The computations performed in this experiment are determining the limiting reagent‚ theoretical yield and percent yield. INTRODUCTION Impurities are common in compounds most especially organic ones that came from natural origin. There can be combinations of soluble‚ insoluble and colored impurities. Recrystallization is
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compound‚ either a primary‚ secondary‚ or tertiary alcohol may be synthesized. This is seen in Figure 1. But before the actual Grignard reaction occurs‚ another mechanism must be taken into consideration – the formation of the Grignard reagent. The Grignard reagent is synthesized by adding an organic halide‚ alkyl or aryl‚ to magnesium in an ethereal solvent. Common halides used are iodides and bromides‚ although occasionally chlorides may also
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Identifying Organic Compounds 2. Purpose/Problem: I am doing this experiment to find out what kind of organic compounds are in test tubes A‚ B‚ C and D. I am curious to know if substance D was the lipid because it seemed thin and had a slightly yellow tint of color to it. 3. Research: In my research I was informed about facts and appearances of lipids. First of all lipids are non-polar compounds‚ thus they won’t dissolve in water. This is also known as being hydrophobic. They are made with one
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Aldol Condensation Formal Abstract: An aldol condensation reaction was performed on acetophenone using p-anisaldehyde and sodium hydroxide as a base. This produced trans-p-anisalacetophenone in the form of a fluffy yellow crystal. The reaction was performed in a test tube and sodium hydroxide was added drop by drop followed by recrystallization and vacuum filtration. In order to verify the presence of the ketone 2‚4-dinitrophenylhydrazone was synthesized and reacted with trans-p-anisalacetophenone
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sides of the beaker‚ and then topped. After the eluting solution has risen to within two centimeters of the top of the filter paper‚ the paper was removed from the beaker‚ dried‚ and was stained with a staining reagent solution containing potassium ferrocyanide and potassium iodide. This reagent forms colored precipitates or reaction products with many cations‚ including all of those used in this experiment. The distance of which the spots moved were determined by calculating the Rf value of each substance
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ester is prepared‚ and involves heating a carboxylic acid with an alcohol in the presence of an acid catalyst‚ which is used to expedite the reaction. In this experiment the process was used to synthesis isopentyl alcohol‚ which was the limiting reagent‚ with sulfuric acid and excess of acetic acid. Had equal amounts of acetic acid and isopenthyl alcohol been used‚ approximately only two thirds of each would be converted to acetate. This mixture was heated under reflux for one hour to ensure that
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