Multiple Choice
What is the correct IUPAC name for the compound with the structure ?
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4. Alkanes and Cycloalkanes
IUPAC Naming
Multiple Choice
Which of the following is the correct IUPAC name for the compound with the structure ?
A
propane
B
hexane
C
pentane
D
butane
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Verified step by step guidance1
Identify the structure given: it is a straight chain of carbon atoms connected as 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 in a row.
Recall the IUPAC naming convention for alkanes, where the prefix indicates the number of carbons: 'meth-' for 1, 'eth-' for 2, 'prop-' for 3, 'but-' for 4, 'pent-' for 5, and 'hex-' for 6.
Since the chain has 5 carbons, the correct prefix is 'pent-'. The suffix for alkanes (single bonds only) is '-ane'.
Combine the prefix and suffix to get the correct IUPAC name: 'pentane'.
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