International A Level (IAL)ChemistryEdexcelExam Questions5. Transition Metals & Organic Nitrogen ChemistryOrganic Chemistry: Nitrogen Compounds

Organic Chemistry: Nitrogen Compounds (Edexcel International A Level (IAL) Chemistry): Exam Questions

Exam code: YCH11

2 hours23 questions

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Organic Chemistry: Nitrogen Compounds

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1
1 mark

Which type of compound cannot be a monomer in the formation of polyamides?

  • amides

  • amino acids

  • diacyl chlorides

  • diamines

Choose your answer

2
1 mark

What is the name of the compound shown?

q12-paper-5-jan-2021-edexcel-ial-chemistry

  • 1-methylpropanamide

  • 3-methylpropanamide

  • 2-methylbutanamide

  • 3-methylbutanamide

Choose your answer

3
1 mark

Which sequence shows these compounds in order of decreasing basicity?

  • C6H5NH2 > CH3CH2CH2NH2 > NH3

  • NH3 > CH3CH2CH2NH2 > C6H5NH2

  • CH3CH2CH2NH2 > NH3 > C6H5NH2

  • C6H5NH2 > NH3 > CH3CH2CH2NH2

Choose your answer

4a
1 mark

Alanine is an amino acid.

Which structure best represents alanine at high pH?

q13a-paper-5-june-2021-edexcel-ial-chemistry

    Choose your answer

    4b
    1 mark

    Alanine is a crystalline solid at room temperature.

    What are the main forces broken when alanine melts?

    • London forces

    • hydrogen bonds

    • covalent bonds

    • ionic bonds

    Choose your answer

    5
    1 mark

    Separate 0.1 mol dm−3 aqueous solutions of ammonia, butylamine and phenylamine were prepared.

    Which of the following sequences shows the solutions in order of increasing pH?

    • butylamine, phenylamine, ammonia

    • ammonia, butylamine, phenylamine

    • phenylamine, ammonia, butylamine

    • ammonia, phenylamine, butylamine

    Choose your answer

    6
    1 mark

    Which amine could not be prepared by the reduction of a nitrile?

    q14-paper-5-oct-2021-edexcel-ial-chemistry

      Choose your answer

      7
      1 mark

      The repeat unit of a polymer is shown.

      q14-paper-5-jan-2021-edexcel-ial-chemistry

      What is the structure of the monomer?

      q14-2-paper-5-jan-2021-edexcel-ial-chemistry

        Choose your answer

        8
        1 mark

        How many different amino acids form the repeat unit of the polymer shown?

        q15-paper-5-oct-2021-edexcel-ial-chemistry

        • 3

        • 4

        • 5

        • 6

        Choose your answer

        9
        1 mark

        The repeat unit of a polymer is shown.

        q15-paper-5-jan-2021-edexcel-ial-chemistry

        This polymer could be

        • both a polypeptide and a polyamide

        • neither a polypeptide nor a polyamide

        • a polypeptide but not a polyamide

        • a polyamide but not a polypeptide

        Choose your answer

        10
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        1 mark

        Which of these correctly lists ammonia, butylamine and phenylamine in order of increasing base strength?

        • Ammonia < butylamine < phenylamine

        • Ammonia < phenylamine < butylamine

        • Phenylamine < ammonia < butylamine

        • Phenylamine < butylamine < ammonia

        Choose your answer

        11
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        1 mark

        Which of these correctly shows the reagents and conditions for the diazotisation of phenylamine (C6H5NH2)?

        Reagents

        Temperature

        A

        NaNO2, dilute HCl

        Below 10°C

        B

        NaNO3, dilute HCl

        Below 10°C

        C

        NaNO2, dilute HCl

        Above 10°C

        D

        NaNO2, dilute NaOH

        Below 10°C

          Choose your answer

          12
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          1 mark

          The structure of the amino acid glycine is shown.

          A structural formula of glycine. A central carbon atom is bonded to two hydrogen atoms, an amine group, NH2, and a carboxylic acid group, COOH.

          Glycine has an isoelectric point of 6.0. Which species is the predominant form of glycine at pH 6?

          • H2NCH2COOH

          • H3N+CH2COO-

          • H3N+CH2COOH

          • H2NCH2COO-

          Choose your answer

          13
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          1 mark

          Ethanamide, CH3CONH2, is heated under reflux with excess dilute hydrochloric acid. Which products are formed?

          • CH3COOH and NH4Cl

          • CH3COOH and NH3

          • CH3COO- and NH4Cl

          • CH3COO- and NH3

          Choose your answer

          14
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          1 mark

          A section of a polyamide is shown.

          A skeletal structure of a polymer repeat unit enclosed in square brackets with a subscript n outside the bottom right bracket. Inside the brackets, reading from left to right, is an N-H group, connected to a straight chain of six CH2 groups, connected to another N-H group. This is connected to a carbonyl C=O group, followed by a straight chain of four CH2 groups, and ending with another carbonyl C=O group. Extension bonds cross the brackets on the left and right.

          Which monomers were used to produce this polymer?

          • H2N(CH2)6NH2 and HOOC(CH2)4COOH

          • H2N(CH2)6NH2 and HOOC(CH2)6COOH

          • H2N(CH2)6COOH and H2N(CH2)4COOH

          • HOOC(CH2)6COOH and H2N(CH2)4NH2

          Choose your answer

          15
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          1 mark

          The structure of threonine is shown.

          A skeletal formula of threonine. A central backbone of four carbon atoms. Carbon 1 is part of a carboxylic acid group, COOH. Carbon 2 is bonded to an amine group, NH2. Carbon 3 is bonded to a hydroxyl group, OH. Carbon 4 is a methyl group, CH3.

          How many chiral centres does threonine contain?

          • 0

          • 1

          • 2

          • 4

          Choose your answer

          1
          1 mark

          Which reagent reacts at room temperature with methylamine, CH3NH2, to form the compound N-methylethanamide?

          • CH3COCH3

          • CH3COOH

          • CH3COOCH3

          • CH3COCl

          Choose your answer

          2
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          1 mark

          Which reaction produces a secondary amine as the major organic product?

          • CH3Br + excess NH3(aq) →

          • CH3CH2CN + LiAlH4, then H3O+ →

          • CH3CONH2 + LiAlH4, then H3O+ →

          • Excess CH3NH2 + CH3CH2Br →

          Choose your answer