"Gas chromatography" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 48 of 50 - About 500 Essays
  • Better Essays

    Atdp Course

    • 1493 Words
    • 6 Pages

    Candy Chromatography By: Avani Reddy 7th Grade Introduction Ever wondered why candies are different colors? Ever wondered why candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research

    Premium Color Chromatography Thin layer chromatography

    • 1493 Words
    • 6 Pages
    Better Essays
  • Good Essays

    make sure the apparatus did not fall apart while in use. For the next step of the experiment gas chromatography was used to analyze the samples. In gas chromatography‚ it puts the solution into two separate phases‚ the mobile (non-polar) and the stationary (polar) phase. The mobile phase is where the solution is carried by an inert gas‚ in this case helium‚ through a column that is heated. For gas chromatography‚ the 3 tubes of solution that we received were individually tested to determine its composition

    Premium Water Temperature Thermodynamics

    • 436 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Tlc Chem 121

    • 3016 Words
    • 13 Pages

    Abstract In order to experiment with distinct components of a mixture‚ they must be first separated so they can be observed individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further

    Premium Thin layer chromatography Chromatography

    • 3016 Words
    • 13 Pages
    Better Essays
  • Good Essays

    chromolab

    • 2003 Words
    • 15 Pages

    Chemistry 100 Experiment #2: Chromatography of Food Dyes Name: Cassandra DeVaux Date: April 17‚ 2014 Purpose: To learn how mixtures of compounds can be separated and what food dyes are found in certain foods Introduction: In this exercise we will separate food dyes from a variety of sources. We will first gather data on known dyes where we know how many substances make up the dye. Then we will collect data on some samples where we do not know the make-up. We will compare our

    Premium Thin layer chromatography Chromatography E number

    • 2003 Words
    • 15 Pages
    Good Essays
  • Powerful Essays

    experiment

    • 1428 Words
    • 6 Pages

    IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different solubilities and adsorption

    Free Chromatography Thin layer chromatography

    • 1428 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Lab Report 6

    • 442 Words
    • 2 Pages

    lab is to separate the caffeine samples we are using‚ using thin layer chromatography. The solvent we are using for the separation is 3:1 mixture of Chloroform and Acetone. Principle: Thin layer chromatography (TLC) is an important technique that is useful for separating organic compounds. TLC is often used to monitor the progress of organic reactions and to check the purity of products. Separations in Thin layer chromatography involve distributing a mixture of two or more substances between a stationary

    Premium Thin layer chromatography Chromatography Analytical chemistry

    • 442 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Stereochemistry of Dihydroxylation Reactions Question: Can the stereochemical outcome of dihydroxylation reactions be determined by thin layer chromatography? Overview: In this experiment‚ you will perform two reactions that transform alkenes into diols. While similar in functional group transformation‚ these reactions may lead to stereochemically different products. The two possible products are diastereomers of one another‚ and therefore have different physical chracteristics. After

    Premium Thin layer chromatography Solvent Oxidizing agent

    • 540 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    of 95% ethanol producing long red needles. 0.536g‚ 2.07mmol‚ 158-160°C (160°C lit3)‚ 54.6% recovery. Thin layer chromatography was performed in three different eluents‚ hexane‚ toluene‚ and acetone. The chromatography compared aniline‚ 2‚ 4-dinitrobromobenzene‚ and a sample from the mixture of the two reactants when the reaction first began to take place. Another thin layer chromatography used a product sample an hour after the reaction first began and the eluent that showed the best separation of

    Premium Thin layer chromatography Chromatography

    • 716 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Experiment 4

    • 472 Words
    • 2 Pages

    Chromatography of Commercial Analgesics Chromatography of Commercial Analgesics CHEMISTRY 200L EXPT 4 PAGE 8 - 11 CHEMISTRY 200L EXPT 4 PAGE 8 - 11 Janna Vernice R. Villalon*‚ Christian V. Villanueva‚ Cyd Vincent L. Zamora Department of Chemistry‚ College of Science *Corresponding author; e-mail: janna.villalon@rocketmail.com Abstract In analyzing the chromatography of analgesics‚ thin layer chromatography (TLC) was used. A very thin (micron) film of silica is coated on a glass

    Free Chromatography Thin layer chromatography Chemistry

    • 472 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Oil and Gas

    • 2997 Words
    • 12 Pages

    and their uses Exploration milestone-an overview. INTRODUCTION: By definition petroleum is a generic name for hydrocarbons‚ including crude oil‚ natural gas liquids‚ natural gas and their products. Petroleum comes from the Latin petra meaning rock or stone & oleum meaning oil. Petroleum occurs in the earth in combination of any of the four states: gas‚ liquid‚ semisolid‚ and solid. Chemically‚ petroleum is a mixture of carbon‚ hydrogen and oxygen (called hydrocarbons) with minor amounts of nitrogen

    Premium Petroleum

    • 2997 Words
    • 12 Pages
    Better Essays
Page 1 42 43 44 45 46 47 48 49 50