Question:
Assertion (A): Boiling point of butan-1-ol is higher than that of butan-1-amine.
Reason (R): Being more polar, butan-1-ol forms stronger intermolecular hydrogen bonds as compared to butan-1-amine.
Assertion (A): Boiling point of butan-1-ol is higher than that of butan-1-amine.
Reason (R): Being more polar, butan-1-ol forms stronger intermolecular hydrogen bonds as compared to butan-1-amine.
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Hydrogen bonding strength follows the trend:
\[
\text{Alcohols}>\text{Amines}>\text{Ethers}
\]
due to electronegativity differences.
Updated On: Feb 17, 2025
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
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The Correct Option is A
Solution and Explanation
Hydrogen bonding is stronger in alcohols (\(-\text{OH}\) group) than in amines (\(-\text{NH}_2\) group) due to the higher electronegativity of oxygen compared to nitrogen. As a result, butan-1-ol exhibits stronger hydrogen bonding and thus a higher boiling point.
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