• Green Chemistry
    unsublimed camphor and 0.08g of pure camphor with a 2 % yield (in moles). No melting point or IR peaks were obtained. However, the literature value of the melting point is 177.0 °C and an IR peak from 1680-1750 cm-1 with no alcohol peak. Introduction: Oxidations are used in organic chemistry to...
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  • Nitration of Methyl Benzoate
    that the correct product is formed, the melting point and tlc profile are obtained. For the results, the mass of the conical flask was 89.222g, adding 10 drops of methyl benzoate having 90.121g, and used by difference, the mass of methyl benzoate with 0.1988. the mass of recrystallized methyl m...
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  • Oxidation of Cyclohexanone to Adipic Acid
    without a melting point. The product was likely too wet because it was not allowed to dry long enough in the Hirsch vacuum filtration process. Adipic acid is also very soluble in water, so that adding too much water while the product was one the ice bath may have dissolved some of the crystals...
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  • What Makes Ice Melt Faster
    spreading a mixture of sand and salt on the streets after a snowfall to help de-ice the road. Have you ever wondered how this works? This basic chemistry project can give you some clues. Objective The goal of this project is to determine which added material will make ice melt fastest...
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  • Lab Report Boiling Point and Melting Point
    . This is an important property of solids. The melting point of solids, like the boiling point of liquids, is often used for the identification of substances. Boiling points and melting points are recorded in the Handbook of Chemistry and Physics, and can be found in the sections titled "Physical...
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  • Aldol
    melting point analysis. Materials Used: 2 beakers, 100-mL 2 vials, 5-mL 10-mL Erlenmeyer flask 25-mL Erlenmeyer flask filter paper rubber bulb support stand sand bath ice (for ice bath) melting point capillary tubes 100 µL micropipet Pasteur pipettes, plastic glass Pasteur pipettes glass stirring...
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  • Diels Alder Reaction
    , which is a side reaction with this reaction. In order to avoid this, cyclopentadiene is kept on ice to prevent dimerization. The desired product would have been one that yielded crystals with a melting point much closer to the literature value of 165 C, ranging between 161-169 C, this would have...
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  • Preparation of Pure Diphenyl
    Hirsch funnel, electronic weigh, electrothermal heater, oven, aspirator, electrothermal device to determine melting point. Chemicals : Crude diphenyl (3.0 g), ethanol (20 mL), decolourising charcoal (1.0 g), boiling chips, ice Procedure : Crude diphenyl (3.0 g) is measured and obtained using...
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  • An Ice Calorimeter Determination of Reaction Enthalpy
    ice/water mixture by observing the level of liquid in the inverted volumetric pipette. To avoid adding heat to the calorimeter during the addition of reactants, both Mg and H2SO4 were chilled to ice temperature before mixing. Despite these precautions, some melting of calorimeter ice did take...
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  • Synthesis of Grignard Reagents
    is then protonated to give the alcohol, triphenylmethanol. The purity of the final product will then be considered by melting point and IR spectroscopy. Final purified triphenylmethanol weighed 8.02 grams and melted at 158.5-162 degrees Celsius. Introduction: Grignard reagents are the most...
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  • Panacetin
    Alicia Parker 9/22/2011 Experiment 2: Recrystalization and melting point: Identifying a component of “ Panacetin” Catalyst: Organic Chemistry Laboratory 2500 Pg 7-11 Structures: Procedure/Observations: The initial amount of the unknown...
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  • Lab 1
    the surface while cooling in ice-bath Data: Mass of product, actual yield (g) | Percent yield (%) | Melting point range (oC) | 1.199 | 86.82 | 154-157 | Calculations: Theoretical yield *Methyl salicylate =MS, Salicylic acid= SA 1.521g MS x (1mol MS/152.1g MS) x (1mol SA/1mol MS) = 0.01...
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  • Separation of a Base Neutral Mixture
    acid, 3-nitroaniline, and naphthalene. Calculate the percent recovery of each component in the mixture. Measure the melting temperature of each isolated compound. al u at RNH2(solv) + H+(aq) → RNH3+(aq) RNH3+(aq) + OH–(aq) → RNH2(s) + H2O(aq) io n co Organic Chemistry with...
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  • Dispenser
    H2O (when vigorous rxn ended) - cool to RT - place in an ice bath - suction filtration 1 g salicylic acid (125 ml E. flask) 1 g salicylic acid (125 ml E. flask) Melting point determination Melting point determination Recrystallization of aspirin Recrystallization of aspirin end end...
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  • My Champion Person in My Life
    October 17, 2012 Lachu Katel REA112 FALL2012 Summary Bad News Chemistry: Carbon Dioxide Makes Ice Weaker (From Smithsonian Magazine, October 11, 2012) The recent researches and findings have made obvious that increasing amounts of Carbon Dioxide in the atmosphere...
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  • Multistep Synthesis of Benzilic Acid
    collected and washed with 3-4mL ice cold water through vacuum filtration. After air-drying for a few minutes, the weight was recorded followed with melting point characterization. Results and Calculations Benzoin .304g Crude Benzil .28g Purified Benzil .10g Starting Benzil .11g Benzilic Acid...
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  • Exp 3 Synthesis Of Aspirin Formal Lab Report
     Experimental Synthesis of Aspirin and Melting Point Purity Analysis Donald Yeargin CH 222, Section 24221 Department of Chemistry Portland Community College Portland, OR Abstract The various methods available to synthesize aspirin lead to the need to examine and evaluate production...
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  • Preparation of Tin Tetraiodide
    washed by two 2ml ice-cold toluene. The recrystallized tin tetraiodide was weighed and air-dried for a week. The air-dried crystal was weighed. The melting point range of the recrystallized tin tetraiodide was measured using a MEL-TEMP. Instruments should be washed by acetone during the...
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  • Blah Blah Blah
    Chemistry Lab: Ice Cream Introduction: In chemistry, colligative properties are properties of solutions that depend upon the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present.[1] This number ratio can...
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  • State of Matter
    (gas, liquid, or solid) to another). Note: during the phase changing (evaporation, melting, sublimation, condensation, freezing), the temperature of the sample stays constant. Dr. Behrang Madani Chemistry B11 Bakersfield College Heat added (cal) Heating curve of ice Phase diagram: by...
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