Amines (A Level only) (AQA A-Level Chemistry): Flashcards
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Why are amines weak bases?
Why are amines weak bases?
Lone pair on N accepts protons ()
What do amines react with to form alkylammonium salts?
What do amines react with to form alkylammonium salts?
Strong acids
What factor determines amine basicity?
What factor determines amine basicity?
Availability of lone pair on N
Effect of alkyl groups on nitrogen electron density
Effect of alkyl groups on nitrogen electron density
Increase it (positive inductive effect)
Base strength order: , 1°, 2°, 3° amines
Base strength order: , 1°, 2°, 3° amines
< 1° < 2° < 3°
Number of alkyl groups in primary amines
Number of alkyl groups in primary amines
One
Number of alkyl groups in secondary amines
Number of alkyl groups in secondary amines
Two
Number of alkyl groups in tertiary amines
Number of alkyl groups in tertiary amines
Three
Why aromatic amines are weaker bases than aliphatic
Why aromatic amines are weaker bases than aliphatic
Lone pair delocalised into benzene ring
Why are amines nucleophiles?
Why are amines nucleophiles?
Lone pair on N atom