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Questions and Answers
What is the primary purpose of the IUPAC system of nomenclature?
What is the primary purpose of the IUPAC system of nomenclature?
- To identify the functional group in a molecule.
- To determine the physical properties of a compound.
- To assign a unique name to each organic compound. (correct)
- To determine the molecular weight of a compound.
What is the correct order of preference for numbering a carbon chain in an organic compound?
What is the correct order of preference for numbering a carbon chain in an organic compound?
- Functional groups, substituents, and then direction of the main chain. (correct)
- Substituents, functional groups, and then direction of the main chain.
- Direction of the main chain, functional groups, and then substituents.
- Main chain, substituents, and then functional groups.
What is the suffix used to denote an aldehyde?
What is the suffix used to denote an aldehyde?
- -ol
- -one
- -al (correct)
- -ene
What is the prefix used to denote a bromine substituent?
What is the prefix used to denote a bromine substituent?
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What is the correct IUPAC name for the compound CH₃CH₂COCH₂CH₃?
What is the correct IUPAC name for the compound CH₃CH₂COCH₂CH₃?
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Study Notes
IUPAC Nomenclature
- The primary purpose of the IUPAC system of nomenclature is to provide a standardized method for naming organic compounds.
Carbon Chain Numbering
- The correct order of preference for numbering a carbon chain in an organic compound is to number from the end that is closest to a functional group or to number from the end that has a substituent.
Aldehyde Suffix
- The suffix used to denote an aldehyde is
-al.
Bromine Substituent Prefix
- The prefix used to denote a bromine substituent is
bromo-.
IUPAC Naming
- The correct IUPAC name for the compound CH₃CH₂COCH₂CH₃ is 3-methylbutanal.
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