In which of the following molecules is hydrogen bonding

Question

likely to be the most significant component of the total intermolecular forces?

CH4

C5H11OH

C6H13NH2

CH3OH

CO2

I think it is one of the middle three.

Thanks!

Answer 1

CH3OH is the answer.  OH provides the hydrogen bond, and this is the smaller molecule, so it will contribute more to the intermolecular forces than in a large molecule like C5H11OH