Which of the following would involve hydrogen bonding as a significant intermolecular force?
First take a look at them. Hydrogen bonds can ONLY occur in compounds with BOTH hydrogen AND O, N or F. So we can eliminate A) and B) right away. E) looks promising until we realize that the O isn’t bonded to an H, so we can eliminate that as well. That leaves C) and D). You may find it helpful to draw the Lewis structure for each. If you do, you’ll see that D) is the only molecule that has a hydrogen bonded to an oxygen (the O is also bonded to a C, but it’s the O-H bond that is important here.) So the answer is D).
