Question

Why do aldehydes have lower boiling points than the corresponding alcohols?

Answer 1

Answer:

Explanation:

The boiling point of aldehydes and ketones are lower than alcohols due to absence of intermolecular hydrogen bonding. Alcohol Contains An OH Group Allowing For Hydrogen Bonding Which Is Stronger Than Other Intermolecular Forces. Aldehydes And Ketones Have C=O. But No H Bond To The Oxygen

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Answer 2

$\huge\textcolor{green}{\texttt{Answer :-}}$

Both alcohols and acids involve intermolecular hydrogen bonding. But no intermolecular H - bonding occur in aldehydes and ketones.

Therefore, attractive forces in aldehydes and ketones are lesser/weaker than acids and alcohols. Hence, lesser energy is required to break the attractive forces in aldehydes and ketones and thus they have low boiling points(low boiling point = less energy to break the attractive forces).