Amines

• What is the equilibrium reaction for methylamine in water?

  CH3NH2 + H2O ⇌ CH3NH3+ + OH-
• What is the equilibrium reaction for ammonia in water?

  NH3 (aq) + H2O (l) ⇌ NH4+ (aq) + OH- (aq)
• Why do primary aliphatic amines act as Bronsted-Lowry bases?

  The lone pair on nitrogen accepts protons
• Why are primary aliphatic amines considered weak bases?

  They produce a low concentration of hydroxide ions
• How do alkyl groups affect the basicity of primary aliphatic amines?

  They push electrons towards nitrogen, enhancing basicity
• Why do primary aromatic amines like phenylamine not form basic solutions?

  The lone pair on nitrogen delocalizes with the benzene ring
• What do amines react with to form ammonium salts?

  Acids