Ethanol boils at 78.0°C whereas its isomer methoxymethane boils at 24°C because of H- bond.
why does ethanol boil at 78.0°C whereas its isomer methoxymethane boils at 24°C?
Because ethanol has a hydrogen atom connected to the electronegative oxygen atom, intermolecular H-bonding takes place. Because of this, compounds related to ethanol exist.
This means that to break these hydrogen bonds, a lot of energy is needed. As a result, methoxymethane, which does not form H-bonds, has a lower boiling point than ethanol.
Hydrogen bond
A hydrogen bond (or H-bond) is an electrostatic attraction between an electronegative atom holding a lone pair of electrons, known as the hydrogen bond acceptor, and a hydrogen (H) atom that is covalently bonded to a more electronegative "donor" atom or group (Ac).
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