The boiling points of HF, HCl, HBr and HI fol | vedclass

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Question

(B) Due to strong intermolecular hydrogen bonding, $HF$ exhibits the highest boiling point among the hydrogen halides. For the remaining hydrogen hali

Vedclass · Accepted Answer

$HF > HI > HBr > HCl$

Vedclass · Answer

(B) Due to strong intermolecular hydrogen bonding, $HF$ exhibits the highest boiling point among the hydrogen halides. For the remaining hydrogen halides ($HCl$, $HBr$, $HI$), the boiling point is determined by the magnitude of van der Waals' forces. As the molecular size and mass increase down the group, the van der Waals' forces increase, leading to an increase in boiling point. Therefore, the order of boiling points is $HI > HBr > HCl$. Combining these, the overall order is $HF > HI > HBr > HCl$.

The boiling points of $HF$, $HCl$, $HBr$ and $HI$ follow the order:

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