Naming organic compounds
3 marks · EasyThe following compound has the displayed formula:
(a)[1 mark]
State the number of carbon atoms in the molecule.
(b)[1 mark]
State the homologous series to which this compound belongs.
(c)[1 mark]
Give the IUPAC name of this compound.
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(a) 3
(b) alkyne
(c) propyne · must show propyne
Common mistakes: propene; propanol
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Correctly states: 3 carbons.
B2 (b) · 1 mark · Homologous series: alkyne.
B3 (c) · 1 mark · IUPAC name: propyne.
Worked solution
a) The molecule contains three carbon atoms.
b) The triple bond indicates it is an alkyne.
c) Three carbons with a triple bond: the name is propyne.