DEHYDRATION OF 4-METHYLCYCLOHEXANOL PURPOSE Perform an acid-catalyzed dehydration of 4-methylcyclohexanol to produce 4-methycyclohexene. TECHNIQUES • Dehydration of an alcohol • Preparation of an alkene • Distillation • Unsaturation tests THEORY An acid-catalyzed dehydration is a common way to synthesize an alkene from an alcohol. Use of a strong acid like sulfuric or phosphoric acid serves to protonate the alcohol "OH" group‚ forming an H2O molecule that is a much better leaving group
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Experiment #9 – Identification of Aldehydes and Ketones Introduction Aldehydes and ketones share the carbonyl functional group which features carbon doubly bonded to oxygen. In the case of ketones there are two carbon atoms bonded to the carbonyl carbon and no hydrogens. In the case of aldehydes there is at least one hydrogen bonded to the carbonyl carbon; the other attachment may be to a carbon or a hydrogen. In all cases the carbon(s) that are attached to the carbonyl group may be aliphatic (not
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In addition some volatile compound was different may can indicate to different odor. Vietnamese fish sauce samples were identified some volatile compounds which were not found in other samples including S-ethyl ethanethioate‚ cyclohexanone‚ 2-ethyl-3-methylpyrazine‚ 2-methyl-1‚3-dithiacyclopentane‚ 2-acetylthiazole‚ α-methyl benzenemethanol‚ 2-ethyl-3‚5-dimethyl pyrazine‚ phenylmethyl ester acetic acid‚ ethyl ester benzeneacetic acid‚ 3-acetyl-2‚5-dimethylthiophene and triacetin
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Organic chemistry studies carbon compounds‚ but a few carbon compounds such as carbon monoxide‚ carbon dioxide‚ metal carbonates‚ and carbon disulphide traditionally come under the umbrella of inorganic chemistry. INTRODUCTORY 1. Give the following for the compound propane C3H8: (a) Full structural formula (b) Skeletal formula 2. Draw all the possible isomers of hexane C6H14 and give the name of each. 3. Draw the structural formulae for each of the following alkanes: (a) 2‚2- dimethylbutane
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Designer drug From Wikipedia‚ the free encyclopedia Designer drug is a term used to describe drugs which are created (or marketed‚ if they had already existed) to get around existing drug laws‚ usually by modifying the molecular structures of existing drugs to varying degrees‚[1][dubious – discuss] or less commonly by finding drugs with entirely different chemical structures that produce similar subjective effects to illegal recreational drugs. For example mephedrone is a designer drug. History
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SERANGOON JUNIOR COLLEGE General Certificate of Education Advanced Level Higher 2 CHEMISTRY JC2 Preliminary Examination Paper 1 Multiple Choice Additional Materials: Data Booklet Optical Mark Sheet (OMS) 9647/01 23 August 2011 1 hour READ THESE INSTRUCTIONS FIRST On the separate multiple choice OMS given‚ write your name‚ FIN/NRIC and class in the spaces provided. Shade correctly your class and FIN/NRIC number. Eg. If your NRIC is S9306660Z‚ shade S9306660Z for the item “index number”. There
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rate of a chemical reaction 24 17. The kinetics of the iodination of propanone 25 18. Reactions of organic compounds 26 19. Preparation of cyclohexene from cyclohexanol 27 20. Preparation of 1‚3-dinitrobenzene 28 21. Hydrolysis of halogenoalkanes 29 22. Alcohols and phenol 30 23. Preparation and
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p IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI Chemistry Higher level and standard level Specimen paper 1s‚ 2s and 3s For first examinations in 2009 CONTENTS Chemistry higher level paper 1 specimen paper Chemistry higher level paper 1 specimen markscheme Chemistry higher level paper 2 specimen paper Chemistry higher level paper 2 specimen markscheme Chemistry higher level paper 3 specimen paper Chemistry higher level paper 3 specimen markscheme
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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The Chemistry of Fragrances From Perfumer to Consumer 2nd Edition RSC Popular Science Titles The RSC publishes series of inexpensive texts suitable for teachers and students which give a clear‚ readable introduction to selected topics in chemistry. They should also appeal to the general chemist. For further information on all available titles contact: Sales and Customer Care Department‚ Royal Society of Chemistry‚ Thomas Graham House‚ Science Park‚ Milton Road‚ Cambridge CB4 0WF‚ UK
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