Rank NH ₃ , SiH ₄ , and CH ₄ in order of increasing boiling point (lowest to highest). A) NH₃

Question

Rank NH ₃ , SiH ₄ , and CH ₄ in order of increasing boiling point (lowest to highest). A) NH₃ < SiH₄ < CH₄ B) NH₃ < CH₄ < SiH₄ C) SiH₄ < NH₃ < CH₄ D) SiH₄ < CH₄ < NH₃ E) CH₄ < SiH₄ < NH₃

Quizplus · Accepted Answer

Boiling points increase with stronger intermolecular forces. NH (ammonia) has hydrogen bonding, making it have the highest boiling point. CH (hydrocarbons) have the weakest (van der Waals forces), and SiH (silanes) are in between, having stronger van der Waals forces than hydrocarbons due to their larger molar mass but no hydrogen bonding.

Rank NH 3 , SiH 4

Rank NH ₃ , SiH ₄