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CAIE A-Level Chemistry AS 19.1 Primary Amines Questions

Practise primary amine chemistry from halogenoalkane preparation, salt reactions and equations showing amines acting as bases.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • state ethanolic NH3 and heat under pressure for making amines from halogenoalkanes
  • write equations for amines accepting H+ from water or reacting through ammonium salts

Covered syllabus points

19.1.1—Preparation of amines

Question 1

[Maximum number: 1]

Compounds P, Q and R have all been found in the atmosphere of one of Saturn's moons.
P

Figure for Question 1 — CAIE A-Level Chemistry AS
Q

Q

R

R

The flow chart shows some reactions of R.

R

Figure for Question 1 — CAIE A-Level Chemistry AS
Figure for Question 1 — CAIE A-Level Chemistry AS
CH3CH2CH2NH2\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}

T can also be formed by the reaction of CH3CH2CH2Br\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br} with ammonia.

State the necessary conditions of this reaction.

Question 2

[Maximum number: 1]

The structure of coniine is shown.

Figure for Question 2 — CAIE A-Level Chemistry AS

Coniine can be synthesised by reacting ammonia with a dibromo compound, X .

XNH3+C8H16Br2→ coniine +2HBr\begin{gathered} \mathrm{X} \\ \mathrm{NH}_{3}+\mathrm{C}_{8} \mathrm{H}_{16} \mathrm{Br}_{2} \rightarrow \text { coniine }+2 \mathrm{HBr} \end{gathered}

What is compound X ?

A

1,1-dibromo-2-propylcyclopentane

B

1,2-dibromo-2-propylcyclopentane

C

Br(CH2)3CHBr(CH2)3CH3\mathrm{Br}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{CHBr}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{CH}_{3}

D

Br(CH2)4CHBr(CH2)2CH3\mathrm{Br}\left(\mathrm{CH}_{2}\right)_{4} \mathrm{CHBr}\left(\mathrm{CH}_{2}\right)_{2} \mathrm{CH}_{3}

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