Which of the following compounds has the highest boiling point?

Step-by-step solution

The boiling point of a compound depends on the strength of its intermolecular forces. CH ₃ CH ₂ CH ₃ (Propane) is non-polar and has only weak London dispersion forces, resulting in the lowest boiling point. CH ₃ COCH ₃ (Acetone) is polar and has dipole-dipole interactions, giving it a higher boiling point than propane but lower than compounds with hydrogen bonding. CH ₃ CH ₂ OH (Ethanol) and CH ₃ CO ₂ H (Acetic acid) both exhibit intermolecular hydrogen bonding. Acetic acid has stronger hydrogen bonding than ethano