PPT-Reactions of Alkenes:

Addition Reactions Addition is the opposite of elimination Here are some of the many addition reactions that will be considered Addition Reactions Addition of Halogens to Alkenes X 2. Alkanes, alkenes, alkynes and aromatics. Types of Hydrocarbons. Hydrocarbons contain C and H. There are 4 families, alk. anes. only have C-C single bonds, alk. enes. have at least one C=C and alk. ynes. The relative stabilities of related alkenes can be determined by measuring their heats of combustion.. The thermodynamic stability of the butenes increases in the order: 1-butene < cis-2-butene < trans-2-butene.. Preparation of alkenes. Preparation of alkenes continued. Dehydration of alcohols. The H and OH are removed from adjacent carbons.. E.g. ethanol may be heated with . sulphuric. acid to create . ethene. Physical Properties of Alkanes. Non polar compounds. Insoluble in water. Less dense than water and so will float on top of the water. Dissolve in organic solvents . . (. eg. dry cleaning fluid) and in each other (. Hydrocarbons . Essential idea. Structure, bonding and chemical reactions involving functional group inter-conversions are key strands in organic chemistry.. Learning outcomes . Understand:. Alkanes. have low reactivity and undergo free-radical substitution reactions.. of Alkenes: Addition Reactions. Disparlure: sex attractant of the female gypsy moth.. (A type of . pheromone.. ). 2. I. Hydrogenation of Alkenes. Addition. Reactions. oleic acid. (unsaturated). stearic acid. and alkyne . Reactions, continued. Dr. Clower. CHEM 2411. Spring 2014. McMurry. (8. th. ed.) sections 7.7-7.8, 7.10-7.11, 10.3-10.4, 8.2-8.8, 8.10, 8.12, 9.3-9.8, 7.1, 8.1, 9.2, 9.9 . Reactions of Alkynes. Alkenes. The commercial . process. of . hydrogenation is . used. to . convert the double . bonds. in . vegetable oils to . saturated. fats . such as those in margarine. . Learning . Goal . . Draw the condensed or line-angle structural formulas and give the names for the organic products of addition reactions of alkenes. Draw a condensed structural formula for a section of a polymer.. Newehy. Chemistry Department, College of Science, King Saud University. http://fac.ksu.edu.sa/melnewehy. Unsaturated Hydrocarbons. Alkynes. - . Alkynes. are . ydrocarbons. . that contain a . carbon–carbon . Islamic University in . Madinah. Department of Chemistry. Prepared By. Dr. Khalid Ahmad Shadid. Chemistry department – Islamic university in . madinah. . 1. cracking. Crude oil is separated into its different components by a process called . Division of Material. Alkenes and Alkynes are very versatile molecules in Organic Chemistry. As a result, there is a lot of information we need for them. . To make it manageable, the information is divided into two chapters.. Unsaturated Hydrocarbons. Unsaturated hydrocarbon. :. . contains one or more carbon-carbon double or triple bonds. alkene. :. . contains a carbon-carbon double bond and has the general formula C. n. Alkenes. 108 . Chem. Learning Objectives. Chapter . two discusses the following topics and the student by the end of this chapter will:. . Know the structure, hybridization and bonding of alkenes . . Announcements I. Mastering . Ch. . . 20 . assignment . (Organic Chemistry) due 12/10. After that (and the hand grading problem), I will assign class points (probably some bonus to reflect some bad homework problems).