"Alkene" Essays and Research Papers

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    Name : ……………………………………………………………….. Date Due : …………………………………………………………….. Year 12 80% A 70% B AS Level Chemistry 60% C 2008 – 2009 50% D 40% E Below U Questions on % Haloalkanes 2.8 32 1. Chloromethane can be prepared by a reaction between methane and chlorine in the presence of ultraviolet radiation. (i) Outline the mechanism for this reaction. .....................................................................................

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    Appendix APPENDIX 1 Chemical tests for functional groups Homologous series/ Typical compound Functional group(s) Alkanes CH3CH3 ethane C – C and C–H Alkenes CH2 = CH2 ethene C=C Chemical tests/Observations Add liquid bromine in ultraviolet light (or sunlight): White fumes of HBr liberated; decolourisation of bromine occurs slowly (a) Add Br2 in CCl4 at room temperature: Decolourisation of bromine occurs immediately CH2 = CH2 + Br2 → CH2BrCH2Br (b) Add acidified

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    P. Stonebraker Organic Chemistry II lecture UCB Extension Spring 2013 Extra Credit Report Papers Paper is strictly optional. Write a 4-6 page paper on a subject approved by the instructor (either picked from the list below or picked by yourself). Emphasis in the paper should be on the organic chemistry associated with the subject (how it is synthesized‚ uses‚ etc.). No two students can research the same subject. Maximum value of the paper will likely in the 20-40 point range‚ depending

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    ISOMERIZATION OF AN ALKENE Martin‚ Marilen1‚ Lovenia‚ Melden D.2 1Professor‚ School of Che-Chm-BE-MSE‚ Mapua Institute of Technology; 2Students‚ Chm145L/A41‚ School of Che-Chm-BE-MSE‚ Mapua Institute of Technology ABSTRACT The experiment was conducted to accomplish the following objectives. The first objective aims to synthesize an isomer of alkenes. This was done by converting maleic acid to fumaric acid. This conversion was accomplished by applying a heat-catalyzed reaction on maleic acid

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    substances. Crude oil is also a naturally occurring hydrocarbon. Hydrocarbons are molecules that contain hydrogen and carbon and come in various lengths and structures‚ like rings and straight and branched chains. Petroleum contains many alkanes and alkenes and has several impurities when removed from underneath the earth. Refining petroleum entails both the removal of these impurities and also the separation of petroleum into its various components. The specific method for this separation in crude oil

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    the base to lose a hydrogen and form the carbon-carbon double bond [1]. When the more substituted alkene is the dominant product‚ the reaction follows Zaitsev’s rule. Zaitsev’s rule states that the major product of a β-elimination reaction is the most stable alkene [1].Acid-Catalyzed Dehydration is the elimination of a molecule of water from adjacent carbon atoms. An alcohol can be converted to an alkene by dehydration‚ which is often brought on by heating the alcohol with either 85% phosphoric acid

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    excess water. The water will remove the acidic hydrogen on the carbocation producing the desired alkene as well as regenerating the acid catalyst (fig. 2). A time effective way to collect the 4-methylcyclohexene is to heat the reaction to reflux as it is taking place. This allows the product to be separated from the starting materials by means of the boiling point discrepancy between the isolated alkene (101-102C) and the starting alcohol (171-173C). After the distillate is collected any impurities

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    2950 cm-1 sp2 C-H stretch 3100 cm-1 C=O - ketone 1715 cm-1 C=C alkene 1680 cm-1 O O d. e. f. OH sp3 C-H stretch 2950 sp C-H stretch 3310 cm-1 CC alkyne stretch 2220 cm-1 cm-1 sp2 C-H stretch 3100 cm-1 sp3 C-H stretch 2950 cm-1 C=C alkene 1680 cm-1

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    Chemistry revision Atoms elements and compounds Atom-the smallest part of an element that can still be recognized as an element Element-a substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance Nucleus-middle of the atom‚ which contains protons and neutrons Electron-tiny particle‚ which surrounds the nucleus with a negative charge Compound-when two elements react and combine together which contain more than one element. There

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    Chapter 5: Solutions‚ Colloids‚ and Membranes Chapter Summary Mixtures and Solutions * A mixture maintains its identity regardless of the proportions of its components. * A mixture can be separated into its pure components through physical separation techniques. * The components are distributed uniformly throughout a homogenous mixture. * The components are not distributed uniformly throughout a heterogeneous mixture. * A solution is composed of a solvent and one or more solutes

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