Alkene Reactions Addition Reactions only one product 1

Alkene Reactions • Addition Reactions - only one product • 1. Hydrogenation (H 2): Alkene + Hydrogen --> Alkane • 2. Halogenation (X 2): Alkene + diatomic halogen --> Dihaloalkane • 3. Halgenation (HX): Alkene + HX --> Haloalkane • 4. Hydration (HOH): Alkene + HOH --> alcohol • 5. Polymerization: Many alkenes add together into a long alkane chain

Alkene Reactions

1. Hydrogenation Reaction • Alkene + Hydrogen --> Alkane • Hydrogen molecule adds to carbons with double bond.

Alkene Reactions

Alkene Reactions

2. Halogenation Reaction • Alkene + Halogen --> Dihaloalkane • Halogen molecule adds to carbons with double bond.

Alkene Reactions

Unsymmetrical Addition Reactions • Markovnikov’s Rule • For double bonds that have unequal numbers of hydrogen atoms attached. • For unsymmetrical reactants such as HX and HOH • The hydrogen of the reactant goes to the carbon of the double bond that already has the most hydrogen atoms. “the rich get richer” • The -X or the -OH go the other carbon (the one with the least amount of hydrogen

3. Halogenation Reaction • Alkene + HX --> haloalkane • HCl molecule adds to carbons with double bond.

Alkene Reactions

4. Hydration Reaction • Alkene + HOH� --> alcohol • HOH molecule adds to carbons with double bond.

Alkene Reactions

5. Polymerization Reaction • Alkene + Alkene --> long chain of carbons • Double bonds convert to single bonds

Alkene Reactions What is the structure for

Alkene Reactions

Alkene Reactions

Alkene Reactions