Intermolecular forces on physical properties of organic compounds
Intermolecular forces
Solubility
Polar compounds dissolve in polar solvents
nonpolar compounds-dissolve nonpolar solvents
driven by similarity of intermolecular forces
weaker forces, often gases
Dipole-Dipole Forces
Occurs with N-H, O-H, or F-H bonds
strong dipole interations
Attractions between permanent dipoles of polar molecules
London dispersion forces
Present in all molecules
Temporary dipoles between molecules
Lower for compounds with stronger intermolecular forces
Physical state of room temperture
molecules with stroner intermolecular forces likely solids or liquids
Volatility
more energy needed to overcome attractive forces
Boiling & Melting points
Higher for compounds with greater intermolecular forces
compared to similar compounds with weaker forces
