Halogenoalkanes

Question 1

Why can’t you use reflux in when reacting halogenoalkanes with ammonia?

What would you use instead?

Answer 1

Ammonia would escape up the condenser as a gas

Sealed tube

Question 2

What type of ammonia is used in the reaction between a halogenoalkane and ammonia?

Answer 2

Concentrated ammonia solution in ethanol

Question 3

What would you form from the reaction between a halogenoalkane and concentrated ammonia solution in ethanol?

Answer 3

A primary amine

Question 4

What would you get if 1-bromopropane reacted with cold, aqueous sodium hydroxide?

What type of reaction is it?

Answer 4

Propan-1-ol and NaBr

(alcohol)

Nucleophilic substitution

Question 5

What would you form in the reaction between 2-bromopropane and NaOH in ethanol?

What type of reaction is it?

Answer 5

Prop-1-ene + sodium bromide + water

elimination

Question 6

Ionic equation for the reaction between 2-bromopropane and sodium hydroxide in aqueous conditions?

Answer 6

CH3C(Br)HCH3 + OH- —> CH3C(OH)HCH3 + Br-

Question 7

Equation for the reaction between 2-bromopropane and NaOH in ethanolic solution

Answer 7

CH3CH(Br)CH3 +NaOH —-> CH2=CHCH3 + NaBr + H2O