PH3 has lower boiling point than NH3. why?
Answers
Answered by
62
Unlike NH3 ,PH3 molecules are not associated through hydrogen bonding in liquid state. That is why the boiling point of PH3 is lower than NH3.
Answered by
32
Hi there!
✨ Boiling points:
Ammonia [NH₃] has a boiling point of -33°
Phosphine [PH₃] has a boiling point of -83°c.
✨ Reason :
NH₃ is a polar molecule with strong Hydrogen bonding.
This hydrogen bonding is the strongest of all the bonds and results in greater attraction between NH₃ molecule than in PH₃ molecules which has weak dispersion forces .
Cheers!
✨ Boiling points:
Ammonia [NH₃] has a boiling point of -33°
Phosphine [PH₃] has a boiling point of -83°c.
✨ Reason :
NH₃ is a polar molecule with strong Hydrogen bonding.
This hydrogen bonding is the strongest of all the bonds and results in greater attraction between NH₃ molecule than in PH₃ molecules which has weak dispersion forces .
Cheers!
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