Multiple Choice
Select the correct IUPAC name for the following branched chain alkane: with a methyl group attached to the second carbon of the main chain.
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- 1. A Review of General Chemistry5h 5m
- Summary23m
- Intro to Organic Chemistry5m
- Atomic Structure16m
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- 2. Molecular Representations1h 14m
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- IUPAC Naming29m
- Alkyl Groups13m
- Naming Cycloalkanes10m
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- Overview of Alpha-Alkylations and Acylations5m
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- Enamine Alkylation and Acylation16m
- Beta-Dicarbonyl Synthesis Pathway7m
- Acetoacetic Ester Synthesis13m
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- 25. Condensation Chemistry2h 9m
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- Nomenclature of Heterocycles15m
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- Reactions of Pyrrole, Furan, and Thiophene13m
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- Reactions of Amino Acids: Esterification7m
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4. Alkanes and Cycloalkanes
IUPAC Naming
Struggling with Organic Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the correct IUPAC name for the compound with the structure ?
A
Pentane
B
Butane
C
Hexane
D
Propane
Verified step by step guidance1
Identify the number of carbon atoms in the longest continuous chain of the compound. In this case, count the carbons in the chain: \(\mathrm{CH_3 - CH_2 - CH_2 - CH_2 - CH_3}\).
Determine the root name based on the number of carbons: 1 carbon is methane, 2 is ethane, 3 is propane, 4 is butane, 5 is pentane, and 6 is hexane.
Since the chain has 5 carbon atoms, the root name corresponds to 'pentane'.
Check for any substituents or functional groups attached to the main chain. Here, there are none, so no prefixes or suffixes are needed.
Combine the information to write the full IUPAC name, which is simply the root name 'pentane' for this straight-chain alkane.
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