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Multiple Choice
What is the IUPAC name for the compound with the structure ?
A
Propane
B
Hexane
C
Butane
D
Pentane
Verified step by step guidance
1
Identify the molecular structure given: it is a straight chain of carbon atoms connected by single bonds, with the formula CH\_3-CH\_2-CH\_2-CH\_2-CH\_3.
Count the number of carbon atoms in the longest continuous chain. Here, there are 5 carbon atoms connected in a row.
Recall the IUPAC nomenclature for alkanes, where the prefix indicates the number of carbons: 'meth-' for 1, 'eth-' for 2, 'prop-' for 3, 'but-' for 4, and 'pent-' for 5 carbons.
Since the chain has 5 carbons and only single bonds, the suffix '-ane' is used to indicate an alkane (a saturated hydrocarbon).
Combine the prefix and suffix to form the IUPAC name: 'pent' + 'ane' = 'pentane'.