Explain why propanol has a higher boilin...

Explain why propanol has a higher boiling point than hydrocarbon butane ?

Text Solution

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The molecules of butane are held together by weak van der Waals force of attraction, while those of propanol are held together by stronger intermolecular hydrogen bonding.

ltbRgt Therefore, the boiling point of propanol is much higher than that of butane.

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Knowledge Check

Ethanol has higher boiling point than ethanol because

A

ethanol is a polar compound but ethanol is not

B

ethanol forms intermolecular hydrogen bond but ethanal does not

C

ethanol has higher molecular mass than ethanol

D

ethanol forms stronger intermolecular hydrogen bonds than does ethanol

Alcohols have higher boiling points than parent hydrocarbons because of

A

Higher molecular masses

B

Presence o fhydrogen bonding

C

Presence of carbon chain

D

None of these

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