The boiling point of HBr is higher than that of HCl because HBr has ________ (The dipole moments are 1.08 D for HCl and 0.82 D for HBr.)
A)fewer electrons.
B)larger dispersion interactions.
C)hydrogen bonding.
D)larger dipole-dipole interactions.
E)more ionic character.

Question

Quizplus · Accepted Answer

HBr has a higher boiling point than HCl primarily due to larger dispersion interactions (Van der Waals forces), which increase with the size and number of electrons in the molecule. HBr is larger and has more electrons than HCl, leading to stronger dispersion forces.

The Boiling Point of HBr Is Higher Than That of HCl