11 mark
Which reagent reacts at room temperature with methylamine, CH3NH2, to form the compound N-methylethanamide?
CH3COCH3
CH3COOH
CH3COOCH3
CH3COCl
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5.5 Organic Chemistry: Nitrogen Compounds
11 mark
Which type of compound cannot be a monomer in the formation of polyamides?
amides
amino acids
diacyl chlorides
diamines
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21 mark
What is the name of the compound shown?
1-methylpropanamide
3-methylpropanamide
2-methylbutanamide
3-methylbutanamide
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31 mark
Which sequence shows these compounds in order of decreasing basicity?
C6H5NH2 > CH3CH2CH2NH2 > NH3
NH3 > CH3CH2CH2NH2 > C6H5NH2
CH3CH2CH2NH2 > NH3 > C6H5NH2
C6H5NH2 > NH3 > CH3CH2CH2NH2
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4a1 mark
Alanine is an amino acid.
a)
Which structure best represents alanine at high pH?
4b1 mark
b)
Alanine is a crystalline solid at room temperature.
What are the main forces broken when alanine melts?
What are the main forces broken when alanine melts?
London forces
hydrogen bonds
covalent bonds
ionic bonds
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51 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
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61 mark
Which amine could not be prepared by the reduction of a nitrile?
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71 mark
The repeat unit of a polymer is shown.
What is the structure of the monomer?
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81 mark
How many different amino acids form the repeat unit of the polymer shown?
3
4
5
6
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91 mark
The repeat unit of a polymer is shown.
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
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