understanding of the scientific applications surrounding Tetraphenylporphyrin (TPP). In order to generate TPP‚ the group has elected to use the procedure outlined in Bozak & Hill. This requires adding equal parts of distilled pyrrole and reagent grade benzaldehyde together in a round bottom flask in propionic acid. This solution is then refluxed for about 30 minutes and the precipitate is dried by suction filtration. This product will be analyzed and classified by UV-Vis‚ FT-IR‚ and H1 FT-NMR. Once the product
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Infrared Spectroscopy Organic Chemistry Lab 301A B. The purpose of this lab is to study Infrared Spectroscopy‚ which focuses on the study of the electromagnetic spectrum. The area to be studied is the infrared region‚ which is made up of gamma‚ X‚ and UV rays. We want to be able to identify spectra’s to their complementary structures. The background of this experiment particularly deals with the study of compound structure determination‚ and traits. We must be aware of the functional groups
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A composite is defined as the combination of two or more chemically different materials that have properties better than when the compounds act alone. Resin composites‚ which are used in dentistry‚ are compounds composed of three separate agents that act together to form a rigid polymer. The three agents that act together to form the polymer include‚ an organic resin matrix‚ inorganic filler‚ and a coupling agent. The most important agent‚ the organic resin matrix‚ is typically composed of a compound
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%=30%Theoretical yield (from prelab): 1.177 gPercent yield(0.48 g)/(1.177 g) ×100 %=40.78% ConclusionThrough this experiment‚ aldehyde reacts with itself in the presence of acetone and base‚ NaOH. Acetone is used as the enolate forming compound‚ adding to the benzaldehyde followed by the dehydration to form a benzal group. As for the low yield (40.78%)‚ it can be attributed to a few factors. The first being that this reaction goes by an equilibrium and that if this was not shifted far enough to the dibenzalacetone
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base is an example of a mixed aldol condensation reaction‚ the Claisen-Schmidt reaction. Dibenzalacetone is readily prepared by condensation of acetone with two equivalents of benzaldehyde -26 -95 113.9 1. Weigh 0.212 g of pure benzaldehyde directly into a 10 x 100 mm reaction tube. 2. 2. Add 1.6 mL 95% ethanol and 2 mL of 3M sodium hydroxide solution. Then add 0.058 g of acetone to the reaction mixture. 3
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Clays are one of the important natural materials‚ which have been examined for catalytic applications. Clays are characterized by a layered structure and hence they are slippery when wet. They are broadly classified as cationic or smectite type (having layer lattice structure in which two-dimensional oxyanions are separated by layers of hydrated cations) and anionic or brucite type (in which the charge on the layer and the gallery ion is reversed complimentary to smectite type). Anionic clays are
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contain aldehydes‚ not contain methyl ketones‚ and have a melting point around 104-105 oC. Looking at the table of compounds that the unknowns could be in Table 3.1‚ there are only three compounds that contain aldehydes and are insoluable‚ which are benzaldehyde‚ n-Heptanal‚ and cinnamaldehyde. Out of these three compounds‚ only n-Heptanal is close to the melting point found. The reason that n-Heptanal’s melting point of 108oC is slightly off from the experimental melting point range found of 104-105 oC
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solvent. The H- of the NaBH4 reduces one or both carbonyl groups in benzil and then the acidification processes results in a diol or two secondary alcohols as products. If only one carbonyl group is reduced‚ the product results in a racemic mixture of benzoin. If both carbonyl groups are reduced‚ the product results in a meso-hydrobenzion or a racemic mixture of hydrobenzion. The goal of the experiment is for the student to reduce benzil and use melting point‚ TLC‚ and IR to determine the stereochemistry
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Unit 4 Assessment 2-Benzoic Acid Synthesis Synthesis and Investigation of Benzoic Acid Our aims: Create benzoic acid using benzaldehyde and hydrogen peroxide. Then remove some impurities from the benzoic acid crystals. Apparatus: Titration Pipette (25 cm3) Burette (50 cm3) Retort stand Clamp Conical flask (250 cm3) Volumetric flask (250 cm3) and stopper White tile Beakers (250 cm3) Dropping pipette Filter funnel Deionised water Phenolphthalein indicator Volumetric flask
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Defining Terms What exactly is cancer? How can it be treated? These are questions that many people have wondered when they hear of a loved one being diagnosed. Many forms of cancer treatment are widely used in today’s society‚ but two methods can be further discussed in more detail. It is important to know the pros and cons of each method‚ thus making it easier to decide which one will work best for a situation that may be encountered. The first is chemotherapy‚ and the many forms of chemotherapy
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