Question

Given molecular dipole moments for pentene, ethyl ether, bromo-butane and butan-1-amine as 0.2 D, 1.4 D, 2.8 D, and 3.2 D respectively, which molecule is expected to have the highest boiling point? View Available Hint(s) Given molecular dipole moments for pentene, ethyl ether, bromo-butane and butan-1-amine as 0.2 D, 1.4 D, 2.8 D, and 3.2 D respectively, which molecule is expected to have the highest boiling point? Ethyl ether pentene butan-1-amine bromo-butane

Answer 1

Answer: The boiling point will be highest for butan-1-amine.

Step-by-step explanation:

Dipole moment is defined as the separation of positive and negative charges.

More the dipole moment of a compound, more separation between the positive and negative charges and more polar will be the bond.

When a compound has strong dipole-dipole interactions and is heated, more energy will be required to overcome these strong interactions and hence, will have high boiling point. This means that polar molecules have high boiling points than non-polar molecules.

In the given question:

The dipole moment is highest for butan-1-amine which is 3.2 D and will also have highest boiling point among the given molecules.

Hence, the correct answer is butan-1-amine.