Question
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
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Hydrogen bonding
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Dipole-dipole interaction
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Covalent bonds
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London dispersion force
Solution
A.
Hydrogen bonding
When H atom is directly linked with N or O, or F, inter or intramolecular H - bonding is formed.
In between CH3OH molecules, intermolecular H-bonding exists. 
Hence, it is the intermolecular H - bonding that must be overcome in converting liquid CH3OH to gas.
