How does hydrogen bonding influence boiling points of compounds? - Vidyadip

Question

How does hydrogen bonding influence boiling points of compounds?

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Answer

Due to the presence of hydrogen bonding in the compounds, more energy is required to break the bonds.
Therefore, boiling point is more in case of liquid molecules containing hydrogen bond.
Hydrogen bonds can be quite strong with energies up to $40 \ kJ/mol.$
The boiling point generally increases with increase in molecular mass, but the hydrides of nitrogen $(NH3),$ oxygen $(H_2O)$ and fluorine $(HF)$ have abnormally high boiling points due to the presence of hydrogen bonding between the molecules.

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