Question

1. the students want to test an additional substance in their experiment. which substance should they pick if they want the substance to evaporate faster than the four liquids in the investigation?

a substance with a lower boiling point than methanol because it will have weaker intermolecular forces.
a substance with a higher boiling point than water because it will have weaker intermolecular forces.
a substance with a lower boiling point than methanol because it will have stronger intermolecular forces.
a substance with a higher boiling point than water because it will have stronger intermolecular forces.

Explanation:

• Boiling point is related to intermolecular forces. Substances with weaker intermolecular forces evaporate more easily.
• Lower boiling point indicates weaker intermolecular forces. Methanol has a relatively low boiling point among common substances. A substance with a lower boiling point than methanol will have weaker intermolecular forces and thus evaporate faster.

Answer:

A. A substance with a lower boiling point than methanol because it will have weaker intermolecular forces.