=========== ORGANIC CHEMISTRY ============ Organic Chemistry Laboratory - CH 201 (2010-2011) Experiment 4B Column and Thin-Layer Chromatography of Capsicum Frutescens L. Pigments John Cyril Abanto*‚ Vernalyn Abarintos and Clarice Gail Abella Department of Chemistry‚ College of Science University of Santo Tomas‚ Espana Street‚ Manila 1050 Date Submitted: September‚ 2010 ____________________________________________________________
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Chromatography of Commercial Analgesics Using the thin layer chromatography the major components of a commercial analgesic tablet will be indentified and purified. The active ingredients of the analgesic used were characterized by comparison with chromatograms of aspirin‚ acetaminophen‚ ibuprofen‚ mefanemic acid‚ and caffeine through the use of UV chromatography then the Rf value was calculated for each solvent. INTRODUCTION In this experiment‚ thin-layer chromatography (TLC) will be used
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Chromatography • • • Separation based on polarity of compounds Two potential phases for a compound to exist in: mobile and stationary Partitioning of compounds between mobile phase and stationary phase occurs: o Compounds that are less polar move more in the mobile phase‚ those that are more polar “stick” more on the stationary phase o These polarity differences cause compounds move at different rates and therefore can be separated 1. Mobile Phase: the phase the moves; can be gas or
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Chemistry * a science that dealing with the structure‚ composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal combustion
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substances I) table salt II) the liquid called coffee III) mercury is a mixture? 3. brittleness. 1. II and III only 4. density. 2. All of these 3. None of these 002 10.0 points An example of a chemical change is 4. II only 1. swallowing bread. 5. I and III only 2. digesting bread. 6. I only 3. cutting bread. 7. I and II only 4. dropping bread. 8. III only 5. buttering bread. 003 10.0 points Which of the following is a chemical change? 1. melting solid silver to form liquid silver 006 10.0 points Which
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5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks) Answer all question in this section in the spaces provided Q1 Forensic scientists use paper chromatography to compare the inks
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Ion Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the
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LABORATORY REPORT UNIT OPERATION FST359 EXPERIMENT 1 : LIQUID-LIQUID SEPARATION BY DISC-BOWL CENTRIFUGE. NAME : ANAS BIN MOHD KAMAL. ID : 2013467978. GROUP : AS1164A1. LECTURER : SIR MOHAMAD SHAHRIMI BIN HASHIM. OBJECTIVE : 1. To separate cream from dairy milk and coconut milk. 2. To measure the quantity and density of cream and skim milk. MATERIALS : Dairy milk powder and coconut milk. APPARATUS : 25 ml specific gravity (SG) bottles
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The recrystallization of the product is done though a polar solvent like water. The Result of this experiment has a percentage yield of 61% and analytical methods that are to detect the products are 1H NMR‚ 13 C NMR‚ COSY‚ FTIR (IR)‚ Thin Layer Chromatography (TLC) and Melting point. Introduction: There are only several compounds and molecules that are essential to the human body. Such molecule like D-glucose which is considers the second central substance in the maintenance and metabolite of human
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COLUMN AND THIN LAYER CHROMATOGRAPHY Group 9 RAMOS‚ Sharina Joy; REYES Aina Marie; REYES Jallisa Maan; RUBIO‚ John Michael; SABINO Patricia Anne; SANTOS‚ Carlos Rafael ABSTRACT To separate the colored components of siling labuyo and to determine the purity of the components‚ the students performed a column and thin or solid-liquid chromatography procedure. The solid may be almost any material that does not dissolve in liquid phase. But for this experiment‚ the solid used by the students was
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