Which one of the following alcohols has a greater boiling point?
Correct answer: B. Ethylene glycol
- A. Ethanol
- B. Ethylene glycol
- C. Glycerol
- D. Methanol
Explanation
Ethylene glycol does indeed have a higher boiling point compared to ethanol and methanol. This is primarily due to its ability to form stronger hydrogen bonds.Ethylene glycol (HOCH2CH2OH) has two hydroxyl (-OH) groups per molecule, which allows it to form intermolecular hydrogen bonds more effectively than ethanol (CH3CH2OH) and methanol (CH3OH), both of which have only one hydroxyl group per molecule.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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