MHT CET Chemistry question

The boiling point of methanol is greater than that of methyl thiol because, [Kerala PMT 2004]

(A)There is intramolecular hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol
(B)There is intermolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiolCorrect
(C)There is no hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol
(D)There is intramolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol

Answer: (B)

Solution

Oxygen is highly electronegative, so methanol molecules are associated through intermolecular hydrogen bonds, while sulphur in methyl thiol is not electronegative enough to form (appreciable) hydrogen

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Question ID VK-079627