Question

Give reasons for the higher boiling point of H2O than HF?

Answer 1

HF has single sigma bond and fluorine is highly electronegative that's why the bond between HF is stronger than H2O but H2O have great Number of hydrogen bond per molecule because it is surrounded by 4 other H2O molecules and you know that presence of hydrogen bonds makes molecule stronger.....
being stronger it has high boiling point than HF

Answer 2

Answer:h2o has greater boiling point than hf

Explanation: in HF molecule there is symmetrical arrangement of H2 Bond. So during boiling point it is not necessary to break all the H2 bonds and different layers of HF is vaporized and show its boiling point is comparatively less.

In H2O there is an symmetrical distribution of H2 Bond. Show all the H2 bonds are required to be broken during its vaporization and so comparatively larger energy is required. Hence boiling point is high