Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Amines

Question:

If the boiling point of n-C4H9NH2 is 351 K, what will be the boiling point of n-C4H9OH?

Options:

370K

351K

390K

301K

Correct Answer:

390K

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.