Drawing and naming the alcohols
3 marks · Easy(a)[1 mark]
Write the IUPAC name of the alcohol with this structural formula: CH3CH2CH2OH.
(b)[1 mark]
State the number of carbon atoms in this molecule.
(c)[1 mark]
Give the general formula for straight-chain alcohols.
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(a) propan-1-ol
(b) 3
(c) CnH2n+1OH
Also accept: CnH2n+1OH
Common mistakes: propanol instead of propan-1-ol
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Marking points
B1 (a) · 1 mark · Correct IUPAC name: propan-1-ol.
B1 (b) · 1 mark · States 3 carbon atoms.
B1 (c) · 1 mark · Correct general formula: CnH2n+1OH.
Worked solution
a) CH3CH2CH2OH is propan-1-ol.
b) It has 3 carbon atoms.
c) The general formula for straight-chain alcohols is CnH2n+1OH.