Alkene Reactions

Question 1

generally classified as unsaturated hydrocarbon because the presence of multiple bonds

Answer 1

alkene and alkyne

Question 2

organic compound that must have at least one sp2 hybridization carbon atom or -C=C.

Answer 2

alkene

Question 3

geometry of alkene

Answer 3

planar

Question 4

geomtery of alkyne

Answer 4

linear

Question 5

angle of bonds of alkene

Answer 5

120 degrees

Question 6

angle of bonds of alkyne

Answer 6

180

Question 7

simplest alkene

Answer 7

ethene

Question 8

simplest alkyne

Answer 8

ethyne

Question 9

must have at least one sp hybridized carbon atom or -C≡C-

Answer 9

alkyne

Question 10

has a suffixes modified to -ene

Answer 10

alkene

Question 11

named using the IUPAC system using -yne

Answer 11

alkyne

Question 12

name the alkyne and alkene

Answer 12

grade yourself accordingly

Question 13

For compounds containing both a double bond and a triple bond, priority is given to the what

Answer 13

alkyne

Question 14

suffix of compounds containing both a double and trible bond

Answer 14

-enyne

Question 15

However, if the double bond and the triple bond will have the same position in the numbering the carbon chain, then priority is given to the

Answer 15

double bond

Question 16

The double bond will receive the ___ in terms of position

Answer 16

lower number

Question 17

C=C- makes alkene relatively more reactive than alkane

Answer 17

presence of pi electrons

Question 18

can undergo electrophilic addition reaction with the general mechanism shown below

Answer 18

alkene

Question 19

involves the breaking of pi bonds to form two new single bonds

Answer 19

electrophilic addition reaction

Question 20

Reaction involves an electrophile which is an electron pair acceptor

Answer 20

electrophilic reaction

Question 21

intermediate formed in a electrophilic addition reaction

Answer 21

carbocation

Question 22

can be primary, secondary, tertiary, formed during electrophilic addition reaction

Answer 22

carbocation

Question 23

determine the type of carbocation in ppt

Answer 23

grade yourself accordingly

Question 24

most stable followed by secondary and the least is primary carbocation

Answer 24

tertiary carbocation

Question 25

one carbocation is formed, this attacks the carbocation to form the product as shown in the mechanism

Answer 25

nucleophile

Question 26

types of alkene reaction

Answer 26

Halogenation Hydrogenation Hydrohalogenation Halohydrin formation Acid catalyzed hydration Oxidation Hydration

Question 27

determine the type of alkene reaction

Answer 27

grade yourself accordingly

Question 28

this reaction follows anti-Markovnikov’s Rule because it follows free radical mechanism instead of a carbocation intermediate

Answer 28

addition of HBr in the presence of peroxide

Question 29

the addition of -H to the -C=C follows this rule

Answer 29

Markovnikov's rule

Question 30

states that “hydrogen is added to the carbon with the most hydrogens and halide is added to the carbon with the least hydrogens”, this will form a more stable carbocation

Answer 30

Markovnikov's rule

Question 31

still follows Markonivkov’s rule and is acid catalyzed

Answer 31

hydration of alkenes

Question 32

rearrangement is possible via this to form a more stable carbocation

Answer 32

hydride shift

Question 33

follows anti-addition and forms vicinal dihalide

Answer 33

Halogenation

Question 34

halogens that can be added to alkene

Answer 34

Cl or Br

Question 35

addition of halogen in the presence of water

Answer 35

halohydrin formation

Question 36

Follows Markovnikov’s rule wherein the halogen adds to the carbon with the most number of hydrogen atoms

Answer 36

halohydrin formation

Question 37

alkenes transformed to alkanes by addition of hydrogen gas in the presence of a metal catalyst

Answer 37

hydrogenation

Question 38

Most common metal catalyst are:

Answer 38

nickel platinum palladium

Question 39

oxidation of alkene via this process forms aldehyde and ketone

Answer 39

ozonolysis

Question 40

breaks the double bond in ozonolysis

Answer 40

oxidative cleavage

Question 41

Considered a weak oxidation of alkene

Answer 41

ozonolysis

Question 42

common reducing agents

Answer 42

Zinc (Zn) dimethyl sulfide (CH3)2S)

Question 43

stronger oxidizing agent and in acidic medium results in formation of carboxylic acid and ketone

Answer 43

KMnO4

Question 44

produces CO2 in oxidation with KMnO4

Answer 44

terminal alkenes

Question 45

formed in a cold alkaline medium

Answer 45

diol