Which of the following molecules can exhibit hydrogen bonding?
Hydrogen bonding takes place between hydrogen and either nitrogen, oxygen, or fluorine. Carbon has an electronegativity similar to hydrogen’s, and will not hydrogen bond with hydrogens in other molecules. Only molecules with -OH, -FH, or -NH groups can form hydrogen bonds.
Which of the following can form hydrogen bonds in a pure sample?
Only CHu2083NHu2082 and CHu2083OH can have hydrogen bonds between other molecules of the same kind. To have hydrogen bonding, you need an N, O, or F atom in one molecule and an H attached to an N, O, or F atom in another molecule.
Which of the following molecules could hydrogen bond with water?
Hydrogens attached to small, highly electronegative atoms can hydrogen bond. Namely N, O and F. In this example, water can H bond to any group that has an electronegative atom. Choice b, c, and d are capable of hydrogen bonding with water since they all have O atoms in them.
Which of the following substances would not exhibit any hydrogen bonding interactions in a pure substance?
COu2082 does not have any hydrogen atoms, so it cannot exhibit hydrogen bonding. While COu2082 has two internal dipoles, they are of equal magnitude and point in opposite directions, meaning they cancel each other out and the molecule has no net dipole moment, so it cannot exhibit dipole-dipole forces.