Organic Chem

Question 1

Alkene-Alkane

Answer 1

Hydrogenation
hydrogen + alkene -> Alkane
Non-polar solution + Catalyst
(Reverse: alkene needs catalyst)

Question 2

Alkene/alkyne-Haloalkane

Answer 2

Halogenation
halogen + (alkene)2 -> Haloalkane
no water
(Reverse: Unreactive solvent)

Question 3

Alkene/alkyne-Haloalkane (1Halogen)

Answer 3

Hydrohalogenation
HX + Alkene -> haloalkane
no water
(Reverse: takes place under strong NaOH/KOH in ethanol as solvent. Strong heating under reflux)

Question 4

Alkene-Alcohol

Answer 4

Hydration
H2O + alkene -> Alcohol
Strong but dilute acid catalyst
(Reverse: Excess acid with high concentration)

Question 5

Alkane-Haloalkane

Answer 5

Halogenation
X2 + alkane -> Haloalkane + HX
Sunlight

Question 6

Haloalkane-Alcohol

Answer 6

Hydrolysis
haloalkane + H20/NaOH/KOH -> Alcohol + HX/NHX/KX
Haloalkane is dissolved in an ethanol solution and treated with hot NaOH/KOH solution

Question 7

alcohol -> Haloalkane

Answer 7

Hydrohalogenation
Alcohol + hydro-halogen -> haloalkane + water
require HX at room temperature