BRAINCAKEReactions of Alkenes
The pi bond is weaker than the sigma bond so is broken more readily. The C-C bond has an enthalpy of 347kJmol-1 whilst the C=C bond has an enthalpy of 612 kJmol-1
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
Key terms in this lesson
- addition
- A reaction in which a pi bond is broken and atoms or groups are added across it to form a saturated product, with no atoms lost.
- hydrogenation
- The addition of hydrogen across a carbon-carbon double bond, using a nickel catalyst, to form a saturated compound.
- electrophilic addition
- A reaction mechanism in which an electrophile is attracted to and attacks an electron-rich double bond, and a nucleophile then bonds to the resulting carbocation.
- halogenation
- A reaction in which a halogen atom is substituted for a hydroxyl group or a hydrogen atom in a molecule.
More in Alkenes
- Alkenes
- Bonding in Alkenes
- Stereoisomerism in Alkenes
- Hydrogenation
- Reaction with Halogens
- Reaction with Hydrogen Halides
- Reaction with Steam
- Oxidation of Alkenes to Diols
All 11 lessons in Alkenes · All OCR A-level Organic Chemistry topics