Halogenoalkanes

Question 1

Steps in practical to produce bromobutane

Answer 1

Mix nabr with distilled water
Dissolve
Add butanol to pear shaped flask
Add anti bumping granules
Put on condenser
Put in nabr
Put in cold ice bath when on the tripod
Add sulfuric acid slowly
Heat under reflux

Question 2

Reaction to produce chloroalkane from alcohol

Answer 2

Nucleophillic substitution
Alcohol + pcl5
Room temperature

Question 3

Reaction to produce bromoalkane

Answer 3

Nucleophillic substitution
Nabr+ h2so4 produces hbr
Hbr + alcohol
Heat under reflux

Question 4

Production of iodoalkanes from alcohols

Answer 4

Nucleophillic substitution
Pi3 + alcohol
Heat

Question 5

Reaction of halogenoalkane and aqueous alkali

Answer 5

Dilute naoh + halogenoalkane
Dissolve halogenoalkane in ethanol and heat with naoh

Question 6

Reaction of halogenoalkane and ammonia

Answer 6

Conditions- alcoholic nh3 heated in a sealed tube
Nucleophillic substitution
Produces an ethyl amine

Question 7

Hydrolysis of halogenoalkane

Answer 7

Conditions - dissolve halogenoalkane in ethanol and add h2o and warm up
Nucleophillic substitution
Produces alcohol and hx

Question 8

Elimination of halogenoalkane

Answer 8

Reagent- conc koh dissolved in ethanol
Conditions- heat under reflux
Produce Alkene