Which of the following hydrogen bonds is the strongest?

Ortho-nitrophenol is less soluble in water than $p-$ and $m-$nitrophenol because...

What is the energy of a hydrogen bond?

The boiling points of methanol,water,and dimethyl ether are respectively $65\,^{\circ}C$,$100\,^{\circ}C$,and $-24.8\,^{\circ}C$ (note: dimethyl ether is a gas at room temperature). Which of the following best explains these wide variations in boiling point $(b.p.)$?

Which one of the halogen acids is a liquid at room temperature?

Explain: Hydrogen Bond and Thermal Energy.