Question

1. Which of the following should have the highest boiling point?

Answer 1

Answer:

1. CBr4

2. C5H12

3. CF4

4. C8H17NH2

Explanation:

1. The boiling point of a molecule depends on its structure. Because the boiling point of molecules of similar size, depends on the differences in functional groups of the molecule.

For example CBr4 have a higher boiling point than other compounds because they have both London dispersion forces and dipole-dipole interactions.

2. Non-polar molecules like C5H12 will have low melting and boiling points, because they are held together by the weak van der Waals forces.