Exp.11) Identification of unknown ketones. Introduction: Given five samples of a known ketone derivative‚ the purpose of this experiment is to identify which unknown ketone derivative corresponds to the five known samples. In other words‚ using specific methods of compound detection‚ it is possible to match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identification of the unknown ketone is accomplished through thin
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Experiment 1: TLC Analysis of Analgesic Drugs 1/23/2011 Purpose: The goal of this experiment is to test our knowledge and understanding of TLC analysis by having us do a TLC analysis of analgesics to figure out their main chemical components. Calculations: 1.) Rf = Distance spot traveled/ distance solvent traveled Results: Table 1: TLC Analysis Analgesic Drugs | Rf Value | Acetaminophen | 0.323 | Aspirin | 0.597 | Caffeine | 0.081 | Unknown 154 (Plate 1) | 0.081‚ 0.306‚ 0.597
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the amount of substance being examined. These properties are known as intensive properties and are used to identify a substance. Extensive properties‚ such as mass and volume depend on the amount of substance present and are not useful in the identification of a substance. The physical properties of a pure substance can be used to identify the substance and distinguish it from other pure substances. Boiling temperature is one such physical property. Boiling is characterized by the formation of vapor
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Preliminary Test and Solubility Classification of Organic Compound Keene Louise Topacio‚ Christopher Jay Robidillo Abstract The experiment focuses on how to classify organic compounds by its functional groups. It is done by preliminary test and with the solubility test. Preliminary test used two known compounds also the unknowns. Physical state‚ color‚ odor‚ and ignition test were noted. The known compounds are inorganic and organic compounds. A comparison is made from the observation in the unknown
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liquid was purified with simple distillation and the boiling point of 135oC was concluded. Through the analysis of IR spectrum of each unknown the structures for each unknowns were devised. An important peak for the solid unknown D was 1655.71 cm-1 (Ketone) and the peaks that were important for liquid unknown D were 1641.69 cm-1 (Amide)‚ 1126.43 cm-1 (C-N bond)‚ and 1384.20 cm-1 (C-N bond). Using the functional groups and the melting and boiling point of each unknown a list of possible identities was
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separation and purification‚ an Infrared Spectrum will be run to determine the composition of the recovered material. Infrared Spectroscopy is a very powerful technique used in the determination of molecular structure and the identification of unknown organic materials. The infrared spectrum yields direct information about the presence or absence of key functional groups. "The region of the infrared spectrum which is of greatest interest to organic chemists
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Names Period Date Understanding Chemical Hazard Labels and MSDS OBJECTIVE: To read and interpret chemical hazard labels and MSDS. MATERIALS: How to read a Chemical Label MSDS - Acetone PROCEDURE: Use the documents listed above to answer the following questions. 1. Interpret colors on a chemical hazard label. The following colors on a chemical label alert a user regarding what hazards? a. red b. yellow c. blue d. white 2. Interpret numbers on a chemical hazard label. a. A number ____ is
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Abstract Chemically active extraction was used to separate two unknown compounds from each other and to determine what compound class each compound belongs. The solid unknown was purified by recrystallization and its melting point range was determined to be 109-111°C. The liquid unknown was purified by simple distillation and its boiling point was determined to be 95°C. An IR spectrum was collected for each of the purified compounds; the solid was determined to be 3-toluic acid and the liquid was
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2012; Date Submitted: September 19‚ 2012 Results and Discussion Aldehydes and ketones both contain the carbonyl group – a group in which a carbon atom has a double bond to oxygen. The carbonyl group in aldehydes is bonded to at least one hydrogen atom‚ and in ketones it is bonded to two carbon atoms. The general formula for an aldehyde is And the general formula for a ketone is Aldehydes and ketones have a trigonal planar arrangement of groups around the carbonyl carbon atom. The
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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 is that there is a stationary phase and a mobile phase. In the case of TLC the stationary phase is the silica gel on the TLC tray. Procedure Chromatograph method is a method of separating mixtures of two or more compounds. Two phases
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