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IUPAC Nomenclature of Organic Compounds

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Questions and Answers

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?

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?

-ol

-one

-al (correct)

-ene

What is the prefix used to denote a bromine substituent?

<p>Bromo-</p> Signup and view all the answers

What is the correct IUPAC name for the compound CH₃CH₂COCH₂CH₃?

<p>2-Methyl-1-butanone</p> Signup and view all the answers

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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Description

Test your knowledge of the IUPAC system of nomenclature for organic compounds. Learn about the rules for naming line structures and identifying correct suffixes and prefixes.