Multiple Choice
What is the correct IUPAC name for the compound with the structure ?
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- 1. A Review of General Chemistry5h 6m
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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
Butane
B
Pentane
C
Propane
D
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Verified step by step guidance1
Identify the structure given: it is a chain of four carbon atoms connected in a row, each bonded to the appropriate number of hydrogens to satisfy carbon's tetravalency.
Determine the longest continuous carbon chain in the molecule. Since there are four carbons in a straight chain, the parent hydrocarbon is an alkane with four carbons.
Recall the IUPAC naming convention for alkanes: the prefix indicates the number of carbons (meth-, eth-, prop-, but-, pent-, etc.) and the suffix '-ane' indicates single bonds (alkane).
Match the number of carbons to the correct prefix: 4 carbons correspond to 'but-', so the compound is a butane.
Verify that there are no double bonds or functional groups that would change the suffix or require numbering; since the structure is a simple alkane, the correct IUPAC name is 'butane'.
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