Which of the following is true?
A) No amines form hydrogen bonds.
B) The N−H- - - -N hydrogen bond is stronger than the O−H- - - -O hydrogen bond.
C) The N−H- - - -N hydrogen bond is the same strength as the O−H- - - -O hydrogen bond.
D) The N−H- - - -N hydrogen bond is weaker than the O−H- - - -O hydrogen bond.

Question

Quizplus · Accepted Answer

The N−H- - - -N hydrogen bond is weaker than the O−H- - - -O hydrogen bond. This is because oxygen is more electronegative than nitrogen, which makes the O-H bond more polar and therefore stronger. Additionally, oxygen has two lone pairs of electrons that can participate in hydrogen bonding, whereas nitrogen only has one, which also contributes to the strength difference. Choice A is false as many amines can form hydrogen bonds. Choice B is false as the N-H-N hydrogen bond is actually weaker than the O-H-O hydrogen bond. Choice C is false as already discussed, the O-H-O hydrogen bond is stronger.

Which of the Following Is True