Contents PART XV ANALYTICAL CHEMISTRY Chapter 63 Detecting the presence of chemical species Action of heating solid sample strongly 1 Chapter 64 Separation and purification methods Centrifugation Sublimation Partition equilibrium of a solute between two immiscible solvents Two-dimensional thin-layer chromatography 2 2 3 6 Chapter 65 Quantitative methods of analysis Detection of end point in acid-alkali titration 8 Chapter 66 Instrumental analytical methods More
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the metal to distribute electron density to the ligand. When back bonding occurs‚ it causes the M-C bond to shorten‚ and the C-O bond lengthens6. In this lab‚ molybdenum hexacarbonyl (Mo(CO)6) was used to synthesize 3 different compounds‚ (η6-C6H3(CH3)3)Mo(CO)3‚ Mo(CO)5dppm and Mo(CO)4C2H6N2. Each of these compounds replaces either 1‚ 2 or 3 carbonyl groups from the Mo center with a different ligand. From these compounds‚ observations about how changing out CO ligands will affect the remaining CO
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reacting them with an alkali (such as sodium or potassium hydroxide) at 80°–100 °C in a process known as saponification. fat + NaOH ---> glycerol + sodium salt of fatty acid CH2-OOC-R - CH-OOC-R - CH2-OOC-R (fat) + 3 NaOH ( or KOH) both heated ---> CH2-OH -CH-OH - CH2-OH (glycerol) + 3 R-CO2-Na (soap) R=(CH2)14CH3 Soap is a cleansing agent created by the chemical reaction of a fatty acid with an alkali metal hydroxide. Chemically speaking‚ it is a salt composed of an alkalimetal‚ such
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TETRAHEDRON LETTERS Tetrahedron Letters 39 (1998) 9279-9282 Pergamon Efficiencies of Reductive Amination Reactions on Different Solid Supports Chinh T Bui‚ Firas A. Rasoul‚ Francesca Ercole‚ Yen Pham and N Joe Maeji* Cluron TechnologiesPry Ltd.. 11 Duerdin Street. Cla.~aon‚Vic. 3168‚ Australia Received 12 August 1998; accepted 1 October 1998 Abstract: Rreductive amination on resins derivatized with 5-(4-forntyl-3‚5-dimethoxyphenoxv)valeric acid linker (Barallv linker‚ 1) 1 has been
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CHEM 1332 SPRING 2008 – (NEW) FINAL 1. How much energy is needed to convert 180 grams of ice at -10 ºC to liquid water at 10 ºC? (The molar heat capacity of liquid water is 75.4 J/mol ºC; the molar heat capacity of ice is 40.2 J/mol ºC. The molar heat of vaporization of water is 40.7 kJ/mol. The molar heat of fusion of water is 6.02 kJ/mol.) (A) 71.8 kJ (B) 419 kJ (C) 64.2 kJ (D) 64.6 kJ (E) 11‚620 J 2. Which physical property of a liquid is NOT the result of strong intermolecular
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w w ap eP m e tr .X w om .c s er June 2003 INTERNATIONAL GCSE MARKING SCHEME MAXIMUM MARK: 40 SYLLABUS/COMPONENT: 0620/01 CHEMISTRY (Multiple Choice) Page 1 Mark Scheme IGCSE EXAMINATIONS – June 2003 Syllabus 0620 Question Number Key Question Number Key 1 2 3 4 5 C B A D A 21 22 23 24 25 B D A B D 6 7 8 9 10 C A A B C 26 27 28 29 30 B D D D B 11 12 13 14 15 B D C D
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Antispyware> Prepared by: Nada Ali Supervised by: Dr. Ola Elgeuoshy Spring 2013 Table of Contents Introduction Module (1): Environmental Scanning Ch1: External Environment Analysis Ch2: Internal Environment Analysis and organizational analysis Module(2): Strategy Formulation Ch3: strategy formulation Module(3): Strategy Implementation Ch4: strategy implementation Module(4): evaluation and control Ch5: Evaluation and control Summary & Conclusion References
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named as substituents‚ for example: (CH3)2C=CHCHClCH3 is 4-chloro-2-methyl-2-pentene. If you are uncertain about the IUPAC rules for nomenclature you should review them now. Alcohols are usually named by the first procedure and are designated by an ol suffix‚ as in ethanol‚ CH3CH2OH (note that a locator number is not needed on a two-carbon chain). On longer chains the location of the hydroxyl group determines chain numbering. For example: (CH3)2C=CHCH(OH)CH3 is 4-methyl-3-penten-2-ol. Other examples
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The Wittig reaction is a unique reaction that can be carried out in various ways as our prompt exemplifies. We will be primary focusing on the second of the three schemes. In The usual formation of an ylide occurs via Sn2 attack of a PR3 group on an alkyl halide‚ which is then followed by a strong base deprotonating of one of the hydrogens on the methyl which the PR3 attacked. Before we dive into the details of the reaction occurring in scheme 2 it will be important to understand the mechanism which
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Introduction: Stillnox has many different names‚ Zolpidem‚ Ambiem and Lorex to name a few. Zolpidem is a prescription drug used for treating insomnia‚ it works quickly (within 15 minutes) and the effects last for around 3 hours (PubChem‚ 2016). As Stillnox is extremely effective in helping insomnia sufferers fall asleep a Stillnox dependence occurs and can often lead to addiction. In extreme circumstances death from overdose of Stillnox has and can occur. This can affect society in a number of different
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