Problem
2-3
H3C−OH < H3C−MgBr < H3C−Li = H3C−F < H3C−K
Problem
2-4
The nitrogen is electron-rich, and the carbon is electron-poor.
Problem
2-5
The two C–O dipoles cancel because of the symmetry of the molecule:
Problem
2-9
The structures in (a) are resonance forms.
Problem
2-12
Phenylalanine is stronger.
Problem
2-13
Water is a stronger acid.
Problem
2-14
Neither reaction will take place.
Problem
2-15
Reaction will take place.
Problem
2-16
Ka = 4.9 × 10–10
Problem
2-19
Vitamin C is water-soluble (hydrophilic); vitamin A is fat-soluble (hydrophilic).