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Chemguide – questions
NAMING ORGANIC COMPOUNDS: 2
1. Carboxylic acids and their salts
a) Draw the structures of the following compounds:
(i) ethanoic acid
(ii) potassium ethanoate
(iii) 3-chloropropanoic acid
(iv) sodium 2,3-dimethylbutanoate
b) Name these compounds:
O
(i)
CH3CH2C
OH
O
(ii) CH CHC
3
+
CH3 O Na
O
(iii)
CCl3CH2C
OH
O
(iv)
HC
O Na+
2. Esters
a) Draw the structures of the following compounds:
(i) methyl ethanoate
(ii) ethyl methanoate
(iii) ethyl propanoate
(iv) methyl 2-methylpropanoate
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b) Name these compounds:
O
(i)
CH3C
OCH2CH3
O
(ii)
HC
OCH3
(iii)
O
CH3C
OCH2CH2CH3
O
(iv)
CH3CH2CH2C
OCH2CH3
3. Acyl chlorides
a) Draw the structure for propanoyl chloride.
O
b) Name
CH3C
Cl
4. Acid anhydrides
a) Draw the structure for ethanoic anhydride.
O
b) Name
CH3CH2CH2C
O
CH3CH2CH2C
O
5. Amides
a) Draw the structure for ethanamide.
O
b) Name
CH3CH2CH2C
NH2
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Chemguide – questions
6. Nitriles
a) Draw the structure for propanenitrile
b) Name
OH
CH3CH2CHCN
7. Amines
a) Draw the structures for
(i) ethylamine
(ii) aminoethane
(iii) 2-aminobutane
(iv) (Be careful with this one – it's new.) 1,6-diaminohexane
(v) diethylamine
(vi) triethylamine
b) Name these compounds:
(i)
CH3CH2CH2NH2
(ii)
CH3CHCH3
NH2
(iii)
CH3
NH
CH3
(iv)
CH3
N
CH3
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CH3
Chemguide – questions
8. Amino acids
a) Draw the structures for
(i) 2-aminobutanoic acid
(ii) 3-aminopropanoic acid
b) Name these compounds.
(Important: If you happen to know the biological names for some of the 2-amino acids (such as
glycine, alanine and so on), you should not use those in answering these questions.)
(i)
O
CH3CHC
NH2
(ii)
OH
O
CH2C
NH2
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OH