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AAT Bioquest

Why does methylamine have a lower boiling point than methanol?

Posted May 23, 2024


Answer

Methylamine has weaker hydrogen bonds compared to those in methanol because nitrogen is less electronegative than oxygen. Consequently, it takes less energy to disrupt these weaker intermolecular forces in methylamine compared to methanol. As a result, methylamine has a lower boiling point than methanol because its weaker hydrogen bonds are easier to break, requiring less energy for the transition from the liquid phase to the gas phase.

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