Which of the following best describes the molecules shown below?

Question

Quizplus · Accepted Answer

Molecule I is a long chain of hydrocarbons, which are nonpolar and have weak intermolecular forces. This makes it less soluble in water, which is polar and has strong hydrogen bonds between molecules. In addition, the long chain of hydrocarbons in molecule I gives it a higher melting point, as it requires more energy to break the intermolecular forces between the molecules.

Molecule II, on the other hand, has polar functional groups and a shorter chain of hydrocarbons, which makes it more soluble in water. The polar functional groups can form hydrogen bonds with water molecules, which allows it to dissolve more easily. The shorter chain of hydrocarbons also means that the intermolecular forces are weaker, giving it a lower melting point.

Which of the Following Best Describes the Molecules Shown Below