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Ethane (molar mass 30.07 g/mol) boils at -88.6 degree C. Methanol has almost the

ID: 1067177 • Letter: E

Question

Ethane (molar mass 30.07 g/mol) boils at -88.6 degree C. Methanol has almost the same molar mass (32.04 g/mol), but bolls at 65 degree C. Which of the following BEST explains the reason for the large discrepancy in boiling point? Ethane is ionic and, therefore, has a lower boiling point. Methanol is ionic and, therefore, has a higher boiling point. Both compounds only exhibit dispersion forces Both compounds are polar. Methanol is more polar than Ethane. Methanol exhibits hydrogen bonding. Ethane exhibits hydrogen bonding.

Explanation / Answer

Due to the presence of hydrogen bonding in alcohols they have high boiling point.

Therefore the correct option is methanol exhibits hydrogen bonding

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