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Organic 2 Section 3 - Unit 28: Amines

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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (6)

#1
Front (Question)

Give the reagent and conditions used to ensure that a primary amine is formed from the reaction of a halogenoalkane and ammonia (2 marks)

Back (Answer)

• NH₃ - In excess

#2
Front (Question)

Explain why butylamine is a stronger base than ammonia (2 marks)

Back (Answer)

• Lone pair (on N) - R group increases electron density / donates electrons

#3
Front (Question)

State and explain the difference in base strength between phenylamine and ammonia (3 marks)

Back (Answer)

• Phenylamine weaker • Lone pair on N (less available) • Delocalised into ring

#4
Front (Question)

Explain why ethylamine is a Brønsted-Lowry base (2 marks)

Back (Answer)

• Lone pair on N - Accepts a proton

#5
Front (Question)

Why is phenylamine a weaker base than ethylamine (2 marks)

Back (Answer)

• Lone pair less available - Due to delocalisation

#6
Front (Question)

Explain why 2-aminopentane is a stronger base than ammonia (2 marks)

Back (Answer)

In 2-aminopentane: • Lone pair on N more available or Lone pair on N accepts H+ better • Because of alkyl electron pushing /inductive effect