Boiling Point

[Maggie Doan 1I]

How do you determine which compounds have a higher boiling point such as CHCl3 and CCl4?

[Tyler Vu 4I]

Bond strength, the size of the compounds, molecular weight, and looking at the boiling points of similar compounds can all help determine which has a higher boiling point.

[RachaelKoh3A]

It depends on the kind of molecules/compounds you want to compare. For CHCl3 and CCl4 you are comparing the types of intermolecular forces of attraction between the molecules. CHCl3 is a polar molecule while CCl4 is a non-polar molecule. Dipole forces are the dominant intermolecular forces of attraction between CHCl3 molecules while the dominant intermolecular forces of attraction within CCl4 molecules are London forces. So CCl4 will have the lower boiling point as less energy is needed to overcome the London forces between them.

However, there are different factors for different molecules and it depends on what you are comparing.

[705088777]

the more ionic, the higher the boiling point