10. Alkenes
No description yet. This curated deck is ready for daily study.
Card preview (4)
which is stronger: a C-C bond (made of sigma bond) or a C=C double bond (mad eof sigma and pi bonds)?
C=C
Bond enthalpy for pi bond = +347 Bond enthalpy for sigma bond = +612 which is stronger? which is more reactive?
1) sigma 2) pi
Why is there no rotation around a C=C double bond?
• pi bond formed by overlap of p orbitals • if there was any rotation, p orbitals no longer overlap, pi bond would break
Explain why 2-bromopropane is the major product in this reaction
• 2-bromopropane made fom secondary carbocation • 1-bromopropane made from primary carbocation • secondary carbocations are more stable than primary carbocations due to +ve inductive effect of 2 alkyl groups in comparison to 1 alkyl group