Alkenes

Question 1

Each carbon in double bond is ___ hybridized and trig planar with bond angles of 120°

Answer 1

Sp2

Question 2

Alkenes are ____HC because they have fewer hydrogen atoms per carbon

Answer 2

Unsaturated

Question 3

___alkenes are more stable than ___ alkenes because there is a rediced steric interaction when the groups bonded to the carbons in the double bond are farther apart

Answer 3

Trans , cis

Question 4

As the number of R groups bonded to the carbons in the double bond increases, the alkene becomes more _____

Answer 4

Stable

Question 5

Highly substituted alkene have a higher ratio of ____ than less substituted alkenes and therefore more stable

Answer 5

Sp3-sp2 bonds to sp3-sp3 bonds

Question 6

Another stabilizing interaction of alkene is due to ___ where in it is the overlapping between sigma bond and a p orbital.

Answer 6

Hyperconjugation

Question 7

Highly substituted alkenes have greater interaction vetween c-c pi bond with the adjacent

Answer 7

C-H sigma bonds

Question 8

Pi bond is electron rich therefore

Answer 8

Weaker than sigma bond

Question 9

Alkenes react with electron poor specie called

Answer 9

Electrophiles

Question 10

Alkenes typically undergo

Answer 10

Electrophilic addition

Question 11

The carbon atoms of double bond are trigonal planar and the addition of electrophile can occur in two ways, specifically

Answer 11

Syn (same side) or anti (opposite side)

Question 12

For unsymmetrical alkenes, a single addition product is obtained these are ___ reactions

Answer 12

Regiospecific reaction

Question 13

Regiospecific reactions occur when there is one of the two possible orientation of addition that occurs

Answer 13

True

Question 14

___ when HX reacts with an unsymmetrical substituted alkene this occurs such that it predicts H will add to the carbon with fewer alkyl substituent and X will add to the carbon with more alkyl substituent

Answer 14

Markovnikov’s rule