Molecules are held together by intermolecular forces. Intermolecular forces are the forces of attraction or repulsion that act between the particles of a substance. When strong intermolecular forces exist between particles, more energy is needed to disrupt the intermolecular forces holding the particles together. Because of this, a substance with stronger intermolecular forces will have a higher boiling point.
molecules are held together by two types of intermolecular forces: London dispersion forces and hydrogen bonds.
molecules are only held together by London dispersion forces.
The hydrogen bonding forces between the molecules are stronger than the London dispersion forces between the
molecules. Therefore, more energy will be needed to disrupt the intermolecular forces between the
molecules. Because of this, the boiling point of
is higher than the boiling point of
.
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