Search the web. Some interesting sites are listed below. Note that some of these sites go into much more depth than is reasonable for this course. http://en.wikipedia.org/wiki/Chromatography http://ull.chemistry.uakron.edu/analytical/Chromatography/ http://orgchem.colorado.edu/hndbksupport/TLC/TLC.html this is for TLC – similar to paper http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromatography_paper.html http://jchemed.chem.wisc.edu/JCESoft/Programs/CPL/Sample/modules/paprchrom/paprchromdesc
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OBJECTIVES: The objective of this experiment was to extract plant leaf pigments and determining them by using the Rf values obtained from the paper chromatography technique. The hypothesis of the experiment was that all of the five listed pigments would be present in the extracted plant leaf according to the Rf values. PROCEDURE/APPARATUS: The equipments used were a 18 x 150 mm test tube with stopper‚ graduated cylinders‚ Erlenmeyer flask‚ mortar and pestle‚ metric ruler‚ tall jar‚ acetone‚ tiny
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Liquid Chromatography Purpose: The purpose of this lab was to separate substances based on their polarity by using liquid chromatography. Data Table: Red Dye Blue Dye Run#1 Run#2 Run#3 Run#1 Run#2 Run#3 Start of Band(mL) 1.50 2.20 1.00 2.70 3.00 2.00 End of Band(mL) 2.70 3.00 2.00 6.40 5.50 6.00 Beaker Eluant Observations 1 H2O White powder 2 5%isopropyl Red powder 3 28%isopropyl Blue powder 4 70%isopropyl Oily residual Calculations: W = Vend – Vstart
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Title:The Chromatography Process of Expo Markers Abstract:This experiment is to uncover whether or not the Expo Markers are homogeneous or heterogeneous mixtures. The experiment will conduct filter paper being slightly submerged in a container of water and inspected for pigmentation changes. In the experiment the pigments will rise up the filter paper once exposed to the water (solvent). After the experiment‚ it concludes that the mixture is a homogeneous mixture due to the chemical
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Rev. 7/3/2013 DRAFT ACG 4361 TEST 2 SAMPLE PROBLEMS SOLUTION PROBLEM 1 Lugozi Company manufactures three sizes of kitchen appliances: small‚ medium‚ and large. Product information is provided below. SMALL MEDIUM LARGE Unit selling price $300 $500 $1‚000 Unit costs: Variable manufacturing (120) (240) (400) Fixed manufacturing (80) (100) (240) Variable selling and administrative (60) (60) (60) Unit profit $ 40 $ 100 $300 Machine-hours per unit 20 40 100 The maximum machine-hours available
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Just because you have finished college two years earlier does not give you the right to tease your old schoolmates who are lagging behind. Or does it? While it is rude to act superciliously toward them‚ knowing that you made the better choice to challenge yourself is enough of a pride booster. Recently‚ high school pupils graduate high school with a number of college credits‚ whether from AP courses or from a dual enrollment program at a local college or university. If high school students are already
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Community Outreach & Education Program CHROMATOGRAPHY (Adapted from: Forensic Science Activities. University of Colorado Boulder Hughes Initiative. .) DESCRIPTION: Students will use paper chromatography to separate ink molecules and identify the pen used on an unknown sample of handwriting. Students will graph and analyze data they collect using paper chromatography. PURPOSE/GOAL: Students will be able to: • Gain understanding of the purpose of chromatography. • Measure and graph pigment separation
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Gabriel Alizaidy Liquid Chromatography September 14‚ 2009 Objective: To separate the components of unsweetened‚ grape flavored Kool-Aid. Procedure: Using two syringes‚ inject different concentrations of alcohol to extract red and blue dyes‚ and artificial flavoring. Data: Conclusion: Different dyes are shown when separated by different concentrations of isopropyl alcohol. Discussion of Theory: Chromatography‚ resolution and selectivity played major roles in making the experiment work
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Chromatography of Food Dye Chem 180-DL3 Abstract: The goal of this experiment was to use different dyes to determine the Rf value. Chromatography is done to determine the presence of a mixture in a substance. In this experiment different dyes were used such as McCormick food coloring‚ M&M’s‚ Kool-Aid‚ and the dyes that came with the lab kit. Experiment and Observation: In this experiment a 50mL beaker was filled with luke warm water and a pinch of salt water was dissolved in it
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com Liquid Chromatography AP Chemistry Laboratory # 18 Publication No. 10535A Catalog No. AP9093 Introduction In this experiment‚ liquid chromatography is used to separate the substances that are present in grape-flavored Kool-Aid®. First‚ the dyes responsible for the purple color‚ FD&C Blue #1 and Red #40 are separated. Then‚ in a second experiment‚ the other components of Kool-Aid®‚ the flavorings and citric acid‚ are separated as well. Concepts • Resolution • Liquid chromatography • Selectivity
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