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Are hydrogen bonds weaker or stronger than the Van der waals force?

Answer 1

Stronger.

Van der Waals interactions are predicated on random and instantaneous dipoles which last for fractions of a second in long, polarizable bonds; hydrogen bonding includes intermolecular interactions with permanent dipoles (and partial charges) between hydrogen atoms and a few other elements.

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Answer 2

Olivia Anton

Hydrogen bonds are generally stronger than van der Waals forces. Hydrogen bonds involve the attraction between a hydrogen atom bonded to an electronegative atom (such as oxygen, nitrogen, or fluorine) and another electronegative atom. Van der Waals forces, on the other hand, include dipole-dipole interactions, London dispersion forces, and induced dipole-induced dipole interactions, which are weaker in comparison.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.