Molecules that are more polar tend to have which of the following characteristics?

• A. Are always gases at room temperature
• B. Do not interact with water molecules
• C. Higher boiling points due to stronger dipole-dipole interactions
• D. Lower boiling points due to weaker intermolecular forces

Answer: (C)

Verified step by step guidance

1. Understand the concept of polarity: Polar molecules have an uneven distribution of electron density, resulting in partial positive and negative charges within the molecule.
2. Recognize that polarity leads to dipole-dipole interactions, which are intermolecular forces between the positive end of one polar molecule and the negative end of another.
3. Recall that stronger intermolecular forces, such as dipole-dipole interactions, require more energy (in the form of heat) to overcome, which increases the boiling point of the substance.
4. Compare this to nonpolar molecules, which have weaker intermolecular forces (like London dispersion forces) and generally lower boiling points.
5. Conclude that molecules that are more polar tend to have higher boiling points due to stronger dipole-dipole interactions.