Which of the following compounds has the highest boiling point?

Question

Quizplus · Accepted Answer

Dimethyl sulfoxide has the highest boiling point because it is a polar molecule with a dipole moment and can form hydrogen bonding with other molecules. Acetone and diethylether are both polar molecules but have weaker intermolecular forces than dimethyl sulfoxide. Cyclobutane and hydrogen cyanide are both nonpolar molecules with weaker intermolecular forces than the polar molecules, resulting in lower boiling points.

Which of the Following Compounds Has the Highest Boiling Point