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Differences in boiling points

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Rationalize the difference in boiling point between the members of the following pairs of substances:
HF(20oC) and HCl (-85oC)
CHCl3 (61oC) and CHBr3 (150oC)
Br2 (59oC) and ICl (97oC)

Please provide detailed explanation.

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Solution Preview

HF has hydrogen bonding which is a very strong intermolecular force that is absent in HCl. The stronger the intermolecular forces, the more energy required to break them. This ...

Solution Summary

Role of intermolecular forces and structures is used to explain differences in boiling points.