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Why do alcohols have higher boiling poin...

Why do alcohols have higher boiling points than halo-alkanes of the same molecular mass ?

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Butane , `C_(4)H_(10)` (mol mass 58) and propanol , `C_(3)H_(7)OH` (mol mass have compare will molecular masses . As butane is non -polar , the molecules of butane are held together by weak van der Waals forces of attraction while those of propanol are held together by stronger intermolecular hydrogen bonding as shwon below :

Therefore , Therefore , the o.p. of propanol is much higher than that of butane .
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