• Organic Chem
    Organic Lab I No. 5-6 Separation of a Carboxylic Acid, a Phenol, and a Neutral Substance (Two-week lab) Reading Assignment 1) Chapter 7 • Introduction: P. 135- first paragraph • Theory and Techniques (p142-145) o Properties of Extraction Solvents ...
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  • Chemistry
    Separation of a Mixture of Solids PURPOSE: The purpose of this lab is to familiarize ourselves with the techniques associated with separating a mixture of different solids. We will learn how the unique properties of substances can aid in this process and help us distinguish each pure substance from...
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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 of...
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  • Separation of Acidic, Basic and Neutral Substances by Extraction
    Separation of Acidic, Basic and Neutral Substances by Extraction KEYWORDS Solubility, density, organic layer, aqueous layer, drying agent, protonation, recrystallization, neutralization, extraction ABSTRACT: The purpose of this experiment is to separate the substances in the acidic mixture and...
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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 separating...
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  • Solubility
     liquids,  and   observing  the  solubility  of  organic  acids  and  bases.     Reference:  Pavia,  A  Small  Scale  Approach  to  Organic  Laboratory  Techniques  pp.  6-­‐9     Report:     Part  A     1) Results...
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  • A Separation and Purification Scheme
    Abstract: Experiment 55 consists of devising a separation and purification scheme for a three component mixture. The overall objective is to isolate in pure form two of the three compounds. This was done using extraction, solubility, crystallization and vacuum filtration. The experiment was carried...
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  • Drug Design
    drug researches were performed this then gave rise to drug discovery and design. In the 1800s drug design and discovery started following scientific techniques and around the 1810 essential foundations of chemical theory had been laid. Drugs are mostly discovered by accident or by “luck”. Drug discovery...
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  • Thin Layer Chormotograhpy
    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 of chromatography...
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  • Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid Impurity.
    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 Reactions: HA + OH-  A- + H2O R-COOH + OH-  R-COO- + H2O Organic Acid Insoluble in...
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  • Chromatography
    coloring samples and the one unknown amino acid sample, through separation, purification, and isolation of small amounts of the material. We also need to be able to calculate the Rf values of all of samples. PROCEDURE: The procedure for TLC of amino acids and Paper chromatography of food colors was...
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  • Organic Chemistry Practical Laboratory Manual
    The dehydration reaction can be carried out in one of two ways, i.e. (a) by heating a mixture of alcohol and dehydrating agent (usually sulphuric acid) in a distilling flask and collecting the olefin as it distils from the mixture; or (b) by passing alcohol vapour through a heated tube (350°C) packed...
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  • Extraction
    Extraction Separation of a Carboxylic Acid, a Phenol, and a Neutral Substance Purpose The objective of the experiment is to identify the three substances in the mixture and to determine the percent recovery of each from the mixture. The unknown will consist of either benzoic acid or 2-chlorobenzoic...
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  • Fluorenene to Fluoronone
    used in this part of the experiment as a separation 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...
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  • Paper
    ASPIRIN FROM SALICYLIC ACID Aspirin is one of the oldest and most common drugs in use today. It is both an analgesic (pain killer) and antipyretic (reduces fever). One method of preparation is to react salicylic acid (1 ) with acetic anhydride (2) and a trace amount of acid (equation 1). OH COOH ...
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  • Tlc Lab
    This experiment explores these techniques to identify an unknown amino acid by TLC and analyze food colors using paper chromatography. By using 2.0 mL of dimethoxyethane and 18 mL of absolute ethanol as the developing solution, and then spotting each sample of amino acids and an unknown on the silica gel...
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  • Extraction
    Distillation Introduction: The recrystallization technique you learned last lab is a method for purifying solids. This week we will learn how to perform a distillation, a method for purifying liquids. Distillation is a common wet-chemical technique for separating organic compounds based on differences...
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  • Solubility Techniques
    spectroscopic methods are used by practicing organic chemists. As you progress through organic chemistry, you will have opportunities to learn and use the techniques of organic qualitative analysis while determining the identity of sample compounds whose identities are unknown to you (the test sample is designated...
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  • Organic Lab
    compounds in the saturated aqueous phase. 2. Decrease the solubility of the organic and aqueous phases in each other, thus improving their separation. 4. What can you do if you do not know which layer is which in an extraction procedure? OR How could you test to determine which was the aqueous...
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  • Analytical Practice Test
    the smallest error in the titration of an strong acid with a strong base is: a) Methyl orange (pKa=3.6) b) Methyl yellow (pKa=3.4) c) Phenol red (pKa=7.8) d) Thymolphthaelin (pKa=10.7) e) Can not be selected without knowing the structure of the acid 6. The titration error is defined as: a) The difference...
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