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Intermolecular Forces

Review -1

For each of the molecules below, list the types of intermolecular force which act between pairs of these molecules.

(a) CH4, (b) PF3, (c) CO2, (d) HCN, (e) HCOOH (methanoic acid)

Hints

Dispersion forces act between all molecules.
Dipole-dipole forces require that the molecules have a permanent dipole moment, so determine the shape of each molecule (draw a Lewis structure, then use VSEPR theory) and see if the shape allows a permanent dipole moment.
For hydrogen bonding to occur the molecule must contain N, O, or F, bonded to a hydrogen atom.

Answers

 

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