Question

Water has a considerably higher boiling point and lower vapor pressure than other molecules of similar or larger molar mass. For example, dinitrogen (N2), methane (CH4), etc. all have lower boiling points and higher vapor pressures than water at the same temperature. How might this be explained? 

Answer 1

Water is a hydrogen bond consisting of bonds between oxygen and hydrogen. Any hydrogen bond will have a high boiling point because of its high polarity. N2 is non polar and is a weak bond that will result in a low boiling point. CH4 has a higher boiling point than N2 but a lower one than H2O all based off of polarity and the strength of their bonds