All GRE Subject Test: Chemistry Resources
Example Questions
Example Question #2 : Functional Groups And Properties
Ephedrine (shown below) contains what type of amine?
Possible Answers:
Tertiary
Neutral
Quaternary
Secondary
Primary
Correct answer:
Secondary
Explanation:
A secondary amine is an amine (nitrogen atom) that is attached to two carbon-containing groups (alkyl groups or aryl groups). The nitrogen in ephedrine is attached to two alkyl groups, making it a secondary amine.
Primary amines are generally written as . Secondary amines are generally written as
. A tertiary amine will be bound to three different R-groups. Quaternary amines require a positive charge on the nitrogen atom to accommodate a fourth R-group.
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All GRE Subject Test: Chemistry Resources
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