A LevelChemistryCambridge (CIE)Exam Questions19. Nitrogen CompoundsNitriles & Hydroxynitriles

Nitriles & Hydroxynitriles (Cambridge (CIE) A Level Chemistry): Exam Questions

Exam code: 9701

1 hour22 questions

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Nitriles & Hydroxynitriles

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1
1 mark

Hydrolysis of CH3CH2CN with dilute HCl produces which compound?

  • CH3COOH

  • CH3CH2CH2NH3

  • CH3CH2COOH

  • CH3CH2COH

Choose your answer

2
1 mark

The equation shows a chemical reaction

CH3CH2CHClCH3  +  CN–  rightwards arrow  CH3CH2CH(CH3)CN  +  Cl–

What is the name for this type of reaction?

  • Nucleophilic substitution

  • Electrophilic substitution

  • Free radical substitution

  • Nucleophilic addition

Choose your answer

3
1 mark

What are the reagents needed in the reaction of 1-bromopropane to butanenitrile?

  • KCN

  • Ethanol and heat

  • KCN, ethanol and heat

  • KCN and ethanol

Choose your answer

4
1 mark

What are the products in the reaction of ethanenitrile and hydrochloric acid?

  • Propanoic acid and ammonia

  • Propanoic acid and ammonium chloride

  • Ethanoic acid and ammonia

  • Ethanoic acid and ammonium chloride

Choose your answer

5
1 mark

What are the products in the reaction of ethanenitrile and sodium hydroxide?

  • Sodium propanoate and ammonia

  • Sodium propanoate ammonium chloride

  • Sodium ethanoate and ammonia

  • Sodium ethanoate and ammonium chloride

Choose your answer

6
1 mark

Which one of the following reactants would not produce a nitrile in a one-step reaction?

  • Amides

  • Aldehydes

  • Halogenoalkanes

  • Alkanes

Choose your answer

1
1 mark

Which of the following reactions would produce 2-hydroxy-2-methylpropanenitrile?

  • Ethanal + Sulphuric acid

  • Propanone + Hydrogen cyanide

  • Ethanal + Ammonia

  • Propanone + Ammonia

Choose your answer

2
1 mark

Reactions were carried out to produce nitriles. Which combination of reactants and reagents is not correct?

 

Reactant

Reagent

A

Halogenoalkane

Potassium cyanide and ethanol

B

Amide

Phosphorus (V) oxide

C

Aldehyde

Hydrogen cyanide

D

Ketone

Ammonia

    Choose your answer

    3
    1 mark

    The following equations show reactions with nitrogen compounds. Which one correctly shows the hydrolysis of nitriles with dilute acid?

    • CH3CN + HCl + 2H2O  rightwards arrow  CH3COOH + NH3Cl

    • CH3CN + HCl + 2H2O  rightwards arrow  CH3COOH + NH4Cl

    • CH3CN + HCl + H2O    rightwards arrow  CH3COOH + NH4Cl

    • CH3CN + HCl + 2H2O  rightwards arrow  CH3COOHCl + NH3

    Choose your answer

    4
    1 mark

    The following equations show reactions with nitrogen compounds. Which one correctly shows the hydrolysis of nitriles with dilute sodium hydroxide?

    • CH3CN +  NaOH +  H2O   rightwards arrow CH3COONa +  NH3

    • CH3CN +  NaOH +  2H2O rightwards arrow CH3COONa +  NH3

    • CH3CN +  NaOH +  H2O   rightwards arrow CH3COONa +  NH4

    • CH3CN +  NaOH +  2H2O rightwards arrow CH3COONa +  NH4

    Choose your answer

    5
    1 mark

    The reaction scheme shows a sequence starting from butanenitrile.

    CH3CH2CH2CN rightwards arrow with step space 1 on top X rightwards arrow with step space 2 on top CH3CH2CH2COOH

    Which set of reagents and conditions correctly completes Step 1 and Step 2?

    Step 1

    Step 2

    A

    Heat with dilute HCl under reflux

    Neutralisation with NaOH

    B

    Heat with aqueous NaOH under reflux

    Acidification with dilute HCl

    C

    Heat with LiAlH4 in dry ether

    Oxidation with acidified K2Cr2O7

    D

    Heat with dilute H2SO4 under reflux

    Distillation

      Choose your answer

      1
      1 mark

      What is the correct two-step synthesis to produce 2-hydroxybutanenitrile from propan-1-ol?

      • 1) NaCl / H2SO4 2) NaCN / Ethanol

      • 1) NaCN / Ethanol 2) NaCl / H2SO4

      • 1) NaCN (aq) / H+ (aq) 2) K2Cr2O7 / H2SO4 under distillation

      • 1) K2Cr2O7 / H2SO4 under distillation; 2) NaCN (aq) / H+ (aq)

      Choose your answer

      2
      1 mark

      Butanone can undergo addition when mixed with NaCN (aq) / H+ (aq), forming product Z. Product Z can then undergo hydrolysis when heated with dilute HCl, forming product Y.

      Which compound is product Y?

      • 2-hydroxypentanoic acid

      • 2-hydroxybutylamine

      • 2-methyl-2-hydroxybutanoic acid

      • 2-ethyl-2-hydroxypropylamine

      Choose your answer

      3
      1 mark

      A student wanted to produce a hydroxynitrile. Which types of reactions, reactants and reagents are shown in the table would correctly describe this reaction?

       

      Type of reaction

      Reactants

      Reagents

      A

      Addition

      Aldehyde

      HCN

      B

      Hydrolysis

      Halogenoalkane

      Ethanolic NH3

      C

      Substitution

      Ketone

      HCN

      D

      Addition

      Halogenoalkane

      KCN, ethanol

        Choose your answer

        4
        1 mark

        What would X, Y and Z be in the following reaction sequence?

        CH subscript 3 CH subscript 2 CH subscript 2 Br space rightwards arrow with KCN space plus space ethanol space plus space heat on top space bold X space plus space KBr space rightwards arrow with NaOH space plus space straight H subscript 2 straight O space plus space heat on top space bold Y space plus space NH subscript 3 space rightwards arrow with dil space HCl on top space bold Z

         

        X

        Y

        Z

        A

        CH3CH2CH2K

        CH3CH2CH2COONa

        CH3CH2CH2COOH

        B

        CH3CH2CH2CN

        CH3CH2CH2COONa

        CH3CH2CH2COOH

        C

        CH3CH2CH2K

        CH3CH2CH2COOH

        CH3CH2CH2COONa

        D

        CH3CH2CH2CN

        CH3CH2CH2COOH

        CH3CH2CH2COONa

          Choose your answer