下列組合中，何者沸點較高？理由為何？
(A) O2(氧)與N2(氮)
(B) SO2 與 CO2
(C) HF與HI
十萬火急的化學題.4
2008-05-19 12:53 am
回答 (1)
2008-05-19 2:24 am
✔ 最佳答案
(A) Nitrogen gas. Van der Waals' force is stronger in nitrogen gas(B) sulphur dioxide. sulphur dioxide has a V shape, which possess net dipole
moment, which intensifies van der Waals' force. while CO2 has a linear shape,
the net dipole moment is zero
(C) HF. there is inter-molecular hydrogen bond in HF, which raise boiling pt.
no H-bond in HI
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