Purpose The purpose of our lab was to reflux an isopentyl alcohol with carboxylic acid (acetic acid)‚ adding three drops of sulphuric acid acting as a catalyst to produce an ester (isopentyl acetate) and water. We verified our answers using infrared spectroscopy. Calculations for Percent Yield To find the percent yield we had to first find moles of our limiting reagent. 1) Weight of 5mL vial + cap
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why you identified each unknown as you did. Unknown 1 was Sodium and Unknown 2 was Potassium. I compared and contrasted each of the flame colors. Then‚ I observed that the elements and flame colors were the same as I initially saw. Part Two (Spectroscopy): 1. Create and complete a data table for Part Two of the lab. It should include the name of the element‚ the colors‚ and the wavelength values of the observed lines. | Hydrogen | Helium | Sodium | Neon | Mercury | Star | 1 | purple‚ 410nm
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HS1103- Engineering chemistry - I KINGS COLLEGE OF ENGINEERING Department of Science and Humanities Sub. Code: HS1103 Sem/Year: I / I Sub. Name: Engg.Chemistry-I UNIT – I – WATER TREATMENT PROCESS: PART – A ( 2 Marks) 1. Define hardness of water. 2. Distinguish between carbonate hardness and noncarbonate hardness. 3. Draw the structure of EDTA. What happens when EDTA is added to hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant
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Determining the Concentration of an Unknown Protein Solution with the use of the Bradford Method Paul Alcala‚ Andrea Basa‚ Melissa Caagbay‚ Frances Cayomba Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract The Bradford method used to determine the protein content of a certain solution (Menguito‚ 2010) and involves the acidic Coomassie Brilliant Blue G-250 as a coloring reagent. [1] The dye is originally pinkish-brown in color when it is in its acidic state
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be adjusted by com-pounding. However‚ in- or online monitoring of the dispersion quality achieved in such compounding processes is a challenging task. Here‚ THz technology can provide a valuable contribution. KEYWORDS: - THz technology‚ THz spectroscopy‚ THz sciences. I. INTRODUCTION The term ‘T-rays’ was coined in the early 1990’s by Bell Labs to describe the spectrum in the Terahertz range (1 THz = 1012). [1] The terahertz region of the spectrum lies on the border of where electronics and
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simple organic chemistry experiment is described that investigates the kinetics of the reaction between 1-bromobutane (BuBr) and iodide (I−) as followed by observing the disappearance of BuBr and the appearance of 1-iodobutane (BuI) using 1H NMR spectroscopy. In small groups of three to four‚ students acquire data to examine the concentrationdependence of both the organic substrate and the nucleophile under pseudofirst-order and second-order conditions. After
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Synthesis of benzilic acid from benzoin utilizing a multi-step reaction. Names: Arian Karim TA Name: Sayantan Das Lab Day & Time: Thursday 7:30-11:40 Lab Section #: Abstract The main purpose of this experiment was to synthesize benzilic acid from benzoin. This requires a multistep synthesis with benzyl as an intermediate product. The first step required HNO3 as an oxidizing agent and the second step required KOH and HCl. The percentage yields of benzil and benzilic acid were 59.5%
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Experiment: Preparation and Identification of Dibenzylidene Acetone Purpose: Prepare dibenzylidene acetone by the famous Claisen-Schmidt condensation reaction. Learn the experimental skills of organic synthesis‚ separation‚ purification‚ structural characterization by instrumental analysis. Train the ability to solve the practical problems. Principle: Aromatic aldehydes can have aldol reaction with aldehydes or ketones which have α-hydrogen atoms‚ dehydrate to form high yield of α‚β-unsaturated
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2a: Infrared Spectroscopy and Analgesic Drug Identification Abstract: To be able to understand how organic soluble compounds could be isolated from non-organic components‚ a chromatographic separation process was used. The objective of the analgesic drug identification is to isolate the organic compounds/ active ingredients in an unknown drug. The identity of the drug was determined through melting point‚ percent recover‚ and Rf values. The comparable data for acetaminophen from the manufacturer
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Among them were dehydration‚ isolation‚ drying‚ and distillation. We used all of these techniques to get the product we were looking for. In addition to these experimental techniques we also verified our product via spectroscopy which is a new technique. Using IR spectroscopy we were able to specifically analyze the functional groups on our product. Results and Discussions: Reaction Equation: Theoretical Yields: Based on limiting moles of product -Based on C7H14O 24 mL C7H14O
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