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Organic A Chapter 9 Reactions of Alkenes By Prof. Dr. Adel M. Awadallah Islamic University of Gaza

Organic A Chapter 9 Reactions of Alkenes By Prof. Dr. Adel M. Awadallah Islamic University of Gaza. Hydrogen is a symmetric reagent. Heat of Hydrogenation: The quantity of heat evolved when one mole of unsaturated compound is hydrogenated (  30 K cal / double bond).

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Organic A Chapter 9 Reactions of Alkenes By Prof. Dr. Adel M. Awadallah Islamic University of Gaza

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  1. Organic A Chapter 9 Reactions of Alkenes By Prof. Dr. Adel M. Awadallah Islamic University of Gaza

  2. Hydrogen is a symmetric reagent

  3. Heat of Hydrogenation: The quantity of heat evolved when one mole of unsaturated compound is hydrogenated ( 30 K cal / double bond) • Heat of Hydrogenation and stability of alkenens

  4. Hydrogenation is carried out using a catalyst: • The catalyst lowers Ea by permitting the reaction to take place in a different mechanism. • The catalyst does not affect the net energy change of the overall reaction.

  5. Water is unsymmetric reagent

  6. Addition of HBr (Unsymmetric reagent):

  7. Addition of halogens produces vicinal dihalides

  8. The effect of adding nucleophile

  9. (halohydrin formation)

  10. Dimerization of isobutene

  11. Free Radical Polymerization of Ethylene

  12. Examples

  13. Examples

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