JEE MainChemistryAlcohols Phenols and Ethers
Given below are four compounds : A. n-Butane B. Methoxyethane C. Propan-1-ol D. Butan-1-ol The correct increasing order of their boiling points is :
Options
- AA < B < C < D
- BA < B < D < C
- CB < A < C < D
- DD < C < B < A
Correct answer
A. A < B < C < D
Step-by-step solution
The boiling point of organic compounds depends on the magnitude of intermolecular forces. n-Butane (A) is a non-polar hydrocarbon and has only weak van der Waals dispersion forces, giving it the lowest boiling point. Methoxyethane (B) is an ether. It is slightly polar and experiences weak dipole-dipole interactions, making its boiling point higher than that of n-butane. Propan-1-ol (C) and Butan-1-ol (D) are alcohols and can form strong intermolecular hydrogen bonds, resulting in significantly higher boiling points