T1W9L2: permanent dipole-dipole

we did empirical formula calculation and intermolecular forces

• revise dispersion forces (weakest intermolecular forces)
• hydrogen bonding (oh no) (strongest) (extreme case of permanent dipole-dipole)
• talk about similar size molecules
• permanent dipole-dipole (not as weak as dispersion, and not as strong as permanent dipole-dipole, where we are)

permanent dipole-dipole §

electronegativity and permanent dipole-dipole §

• ability of an atom to attract the bonding pair of electrons in the covalent bond.
• delta +, delta -
• H-Cl
• H-Br
• blah blah blah
• but only look at H-Cl for now
• H-Cl is only hydrochloric acid when solution. it is hydrogen chloride
• ${}^{\delta +}H-C^{{\delta }_{-}}\mid \mid \mid \mid \mid \mid \mid {\mid }^{\delta +}H-C^{{\delta }_{-}}$

shapes of molecules and permanent dipole-dipole §