Chap03 - Alkenes. Alkenes. Thermodynamics and Kinetics...

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Chapter 3 1 Alkenes. Alkenes. Thermodynamics and Kinetics Thermodynamics and Kinetics Chapter 3 Chapter 3
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Chapter 3 2 Contents of Chapter 3 General Formulae and Nomenclature of General Formulae and Nomenclature of Alkenes Alkenes Cis-Trans Isomerism Cis-Trans Isomerism Reactivity Considerations Reactivity Considerations Thermodynamics and Kinetics Thermodynamics and Kinetics
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Chapter 3 3 General Molecular Formula for Alkenes General molecular formula for acyclic alkanes is C n H 2n+2 CH 3 CH 2 CH 2 CH 2 CH 3 an alkane C 5 H 12 C n H 2n+2
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Chapter 3 4 General Molecular Formula for Alkenes Each π bond introduced, reduces the H content by 2 CH 3 CH 2 CH 2 CH=CH 2 an alkene C 5 H 10 C n H 2n
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Chapter 3 5 General Molecular Formula for Alkenes Each ring also reduces the H content by 2 a cyclic alkane C 5 H 10 C n H 2n
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Chapter 3 6 General Molecular Formula for Alkenes Generalization: The molecular formula for a hydrocarbon is C n H 2n+2 minus 2 hydrogens for every π bond and/or ring present in the molecule Each π bond or ring is considered a unit of unsaturation . a cyclic alkene with 2 units of unsaturation C 5 H 8 C n H 2n-2
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Chapter 3 7 Saturated and Unsaturated Hydrocarbons Alkanes or saturated hydrocarbons contain the maximum number of carbon-hydrogen bonds CH 3 CH 2 CH 2 CH 2 CH 3 a saturated hydrocarbon
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Chapter 3 8 Saturated and Unsaturated Hydrocarbons Alkenes contain fewer than the maximum number of carbon-hydrogen bonds and are therefore referred to as unsaturated hydrocarbons CH 3 CH 2 CH 2 CH=CH 2 an unsaturated hydrocarbon
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This note was uploaded on 12/30/2011 for the course CHEM 2261 taught by Professor Crowe during the Fall '08 term at LSU.

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Chap03 - Alkenes. Alkenes. Thermodynamics and Kinetics...

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