Answer to Question #111862 in General Chemistry for Nur Afiqah Aiman

Question

Hydrogen fluoride, HF exists as liquid at room temperature.Explain this phenomenon based on the formation of hydrogen bond.

Answer 1

The hydrogen fluoride molecule is highly polar, in the liquid and gaseous phases, HF prone to formation hydrogen bonds. This can be depicted as:

...H-F...H-F...H-F...

These hydrogen bonds are strong, their energy is 41.5 kj/mol.