• Separation of a Mixture of Solids
    been separated properly. Conclusion: The students learned how to properly separate pure substances from a mixture. The students did so be physical means, by melting point and solubility. The students separated iron, sand, salt and benzoic acid. During each step during the separation there...
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  • Recrystallization of Benzoic Acid Outline
    Experiment 1: Purification of Benzoic Acid by Recrystallization III. Introduction Purification - physical separation of impurities and by-products from an impure sample pure substance. *Distillation- for liquid compounds, *Recrystallization- solid compounds Recrystallization...
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  • acid base extraction: naphthalene, 4-chloroaniline and benzoic acid
     Acid-Base Extraction: Separation of an Organic Acid, Base and a Neural Compound Introduction/Background Acid base extraction is a widely used commercial method in separating acids, bases and neutral compounds. This is concept is based on several physical properties...
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  • Chemistry
    sources of error while I was performing this experiment. While the separation of the iron was very effective, I felt the other techniques allowed for a large margin of error. When pouring out the salt and benzoic acid mixture, it is likely that an amount of sand went with it. Also, after drying the...
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  • A Separation and Purification Scheme
    solvent for crystallization. The solvents used were methanol and 95% ethanol. The crystallizion was carried out using methanol and then the crystals were isolated using vacuum filtration. Results: 1st Separation Acid (benzoic acid) Melting point: 85-87°C Weight: 8.9106g -8.7525g 0.1581g...
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  • Drug Design
    the peaks of 2-phenoxy benzoic acid (from 7.2 ppm to 6.6 ppm). 6.3 Capillary Electrophoresis Capillary electrophoresis (CE) also known as capillary zone electrophoresis is a technique that separates the analytes within the capillary in to their different electrophoteric mobilities. It is broadly...
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  • Separation of Acidic, Basic and Neutral Substances by Extraction
    . Results showed that the benzoic acid and phenol were separated and recovered. However, there were impurities that were collected together with the substances that caused discrepancies in the results. INTRODUCTION. In organic chemistry, extraction is a separation technique between two immiscible...
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  • Thin Layer Chormotograhpy
    John Doe CHEM 311L Lab Report #5 12-10-09 Thin Layer Chromatography Introduction: Thin Layer Chromatography or TLC is a technique used as a separation and identification technique. There are many forms of chromatography, but one thing that remains constant throughout all of the types...
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  • Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid Impurity.
    Introduction: The purpose of this lab was to separate and purify a compound. This was achieved using techniques that allowed the extraction of the acid, the isolation of the neutral compound and the melting point classification of the neutral compound to test the purity of the sample. Chemical...
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  • Extract
    1 Experiment 3: Extraction: Separation of an Acidic, a Basic and a Neutral Substance Read pp 113-125, 131-132, Technique 11 and pp 132-141, Technique 12, in TOC. View the videos: 4.2 Extraction (Macroscale); 4.6 Drying Organic Liquids; 4.7 Separation of Drying Agents (Macroscale). When...
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  • Chromatography
    CHROMATOGRAPHY Experiment 8 2/1/2012 CHM 2211L Brittany Gaither PURPOSE: The purpose of this experiment was to be able to determine the components of the four unknown food coloring samples and the one unknown amino acid sample, through separation, purification, and isolation of small...
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  • Organic Chemistry Practical Laboratory Manual
    FLAMMABLE, WHEN THE SEPARATION IS BEING CARRIED OUT, ALL NEARBY FLAMES MUST BE EXTINGUISHED. 9 Apparatus and Materials Separatory funnel (250 mL), Buchner funnel, benzoic acid, p-dichlorobenzene, ether, 10% NaOH, conc. HCl, litmus paper, distilled water, anhydrous CaCl2. Experimental...
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  • Tlc Lab
    opportunity to move up the plate and possibly separate. Purity will be verified if there is no separation. 7. c. Aninhydrin solution can be sprayed on the silica gel plate and it will react with the amino acid to give a color when the plate is heated. CITATIONS D.L. Pavia, G.M. Lampman, G.S. Kriz, and R.G. Engel “Introduction to Organic Laboratory Techniques: A Small Scale Approach, 3rd Ed.”, (2011) Brooks/Cole, pp. 800-809...
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  • Extraction
    unknown will consist of either benzoic acid or 2-chlorobenzoic acid, 4-t-butyl phenol. Determine the weight of crystals and also the percent yield Introduction There are various techniques of extractions, solid/liquid extraction, which is the most common, is used for brewing beverages and...
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  • Nitration of Methyl Benzoate
    : Procedure: D. L. Pavia, G. M. Lampman, G. S. Kriz, and R. G. Engel “A Microscale Approach to Organic Laboratory Techniques, 3rd Ed.” (2013) Brooks/Cole, pp. 338-342. Separation Scheme: Calculations: Methyl Benzoate: Limiting Reagent Theoretical yield: 3.05 g 1 mol MB 1 mol product...
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  • Solubility Techniques
    appear in the ether extract. This situation occurs with ethyl benzoate and 1-phenylethyl acetate, for example. Whereas the benzoic acid is easy to isolate, most of the ethanol remains in the water solution. Similarly, the 1-phenylethanol can be readily extracted Technique 25 • Classification...
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  • Paper
    presence of neutral materials. The separation uses acid-base chemistry and two mutually insoluble layers of solvent (water and t-butylmethylether). You will be separating 3 compounds: benzoic acid, 2-naphthol, and p-dimethoxybenzene. OH O OH OCH3 OCH3 benzoic acid 2-naphthol p-dimethoxybenzene...
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  • Fluorenene to Fluoronone
    technique since it permits the sample to be collected whereas TLC only allows the product to be separated and not collected. In the experiment TLC was also used to monitor the effectiveness of the separation. Hence, in preparation of the column, glass fiber was first filled into the column followed by...
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  • Extraction
    ) - Labjack ( In Fractional Distillation ) Main Points: We did that experiment for getting more pure Benzoic Acid with distillation and fractional distillation method. Experiment: We stirred liquid regularly and heated slowly. After heating the liquid slowly, the observed temperature...
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  • Organic Chem
    . Crystallization Place 1 gram of crude oxalic acid (acetylide or benzoic acid may be used in test tube and add 5 mL of water). Boil the mixture for 1 minute and filter the solution while hot and set aside the filtrate to cool. Observe. c. Sublimation Place ½ gram of naphthalene in a dry clean test tube...
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