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If the boiling point of n-C4H9NH2 is 351 K, what will be the boiling point of n-C4H9OH?(a) 329 K(b) 301 K(c) 351 K(d) 390 KThe question was posed to me in exam.The question is from Amines Physical Properties topic in section Amines of Chemistry – Class 12

Answer»

The correct option is (d) 390 K

Easy explanation: Alcohols have HIGHER boiling POINTS than AMINES of comparable molecular MASSES. This is because the electronegativity of N is lower than that of O, which results in the OH bond in alcohols being more polar and hence stronger (in hydrogen bonding) than the N-H bond in amines.



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