Intermolecular Forces Essay examples
There are five types of intermolecular forces: ion-ion forces, ion-dipole forces, ion-induced …show more content…
Knowing what we do about intermolecular forces and their relative strengths, we can make a few assumptions about which forces would be present in different phases under standard conditions. Being that solids are the most difficult to break apart, we would assume that the strongest intermolecular forces (ion-ion, hydrogen bonding) would be found within them. Liquids have a greater ability to flow because the intermolecular forces are weaker than in the solid phase, so we would assume that these would involve ion-dipole and induced dipole forces. We would also assume that the weakest intermolecular forces correspond to the gas phase, meaning dipole-dipole and London dispersion forces.
Intermolecular forces influence physical properties of each phase: gas, liquid, and solid. They can cause real gases to deviate from ideal gas behavior. They can also govern the motion of molecules; molecules in gases move constantly and randomly, they slide past each other freely in liquids, and vibrate in fixed positions in solids. The heats required to melt a solid (heat of fusion) and to vaporize a