ASChemistryCambridge (CIE)Exam Questions19. Nitrogen CompoundsPrimary Amines

Primary Amines (Cambridge (CIE) AS Chemistry): Exam Questions

Exam code: 9701

49 mins14 questions

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Primary Amines

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1
1 mark

What is the displayed formula of ethylamine?

  • Displayed formula of dimethylamine showing N bonded to two CH3 groups and one H
  • Displayed formula of ethylamine showing two-carbon chain with terminal NH2 group
  • Displayed formula of methylamine showing CH3 bonded to NH2
  • Displayed formula of trimethylamine showing N bonded to three methyl groups

Choose your answer

2
1 mark

Which type of reaction is used to synthesise ethylamine from bromoethane?

  • Electrophilic substitution

  • Nucleophilic substitution

  • Oxidation

  • Reduction

Choose your answer

3
1 mark

Bromoethane reacts with reagent X. Which row correctly identifies reagent X and the organic product formed?

X

Product

A

Excess ethanolic ammonia

Primary amine

B

Methanol

Ether

C

Methylamine

Secondary amine

D

Water

Alcohol

    Choose your answer

    1
    1 mark

    Iodomethane is heated under pressure with ethanolic ammonia. The ammonia is not in excess. Which organic compounds are formed in the reaction mixture?

    • A mixture of methylamine, dimethylamine and trimethylamine

    • Dimethylamine only

    • Methylamine and dimethylamine only

    • Methylamine only

    Choose your answer

    2
    1 mark

    1-chloropropane can be used to make propylamine.

    Which row shows the correct reagent and type of reaction?

    Reagent

    Type of reaction

    A

    Aqueous ammonia

    Electrophilic addition

    B

    Aqueous ammonia

    Nucleophilic substitution

    C

    Ethanolic ammonia

    Electrophilic addition

    D

    Ethanolic ammonia

    Nucleophilic substitution

      Choose your answer

      3
      1 mark

      Chloroethane is heated under pressure with an excess of ethanolic ammonia.

      Which compound is the main organic product?

      • CH3CH2NH2

      • (CH3CH2)2NH

      • (CH3CH2)3N

      • (CH3CH2)4N+Cl

      Choose your answer

      1
      1 mark

      Which row correctly identifies the reagents and conditions for the two reactions shown?

      (CH3)2CO → (CH3)2CHCN

      CH3CHClCH3 → CH3CH(NH2)CH3

      A

      Ethanolic KCN, heat

      Aqueous NH3, heat

      B

      Ethanolic KCN, heat

      Excess ethanolic NH3, heat under pressure

      C

      KCN and dilute H2SO4

      Aqueous NH3, heat

      D

      KCN and dilute H2SO4

      Excess ethanolic NH3, heat under pressure

        Choose your answer

        2
        1 mark

        Which amine can not be produced by the reduction of a nitrile?

        • Skeletal formula of 2,2-dimethylpropan-1-amine with NH2 on primary carbon and tert-butyl group
        • Skeletal formula of 2-methylpropan-1-amine with NH2 on primary carbon and isobutyl branch
        • Skeletal formula of butan-1-amine showing straight four-carbon chain with terminal NH2 group
        • Skeletal formula of butan-2-amine showing NH2 on the second carbon of a four-carbon chain

        Choose your answer

        3
        1 mark

        What is the systematic name of the compound shown?

        Structural formula of a quaternary ammonium chloride salt showing nitrogen bonded to two methyl groups and two ethyl groups with a positive charge, paired with a chloride anion

        • diethyldimethylammonium chloride

        • diethylmethylammonium chloride

        • dimethyldiethylammonium chloride

        • ethylmethylammonium chloride

        Choose your answer