Q: Why 2° amines are strongest bases in water?
A: Best balance of +I effect and hydration.
Q: Which test confirms 1° amines only?
A: Carbylamine test.
Q: Why Gabriel not for aromatic amines?
A: Reaction pathway does not yield aromatic 1° amines.
Q: What temperature for diazotisation?
A: 273–278 K.