Chapter 12, Problem 55A

Interpretation Introduction

Interpretation:

The reason for long non-polar molecule to interact more strongly with one another than spherical non-polar molecules of similar composition must be explained.

Concept introduction:

Dispersion force is proportional to the surface area of the molecule.

Answer to Problem 55A

Long non-polar molecule would interact more strongly with one another than spherical non-polar molecules of similar composition as long molecule has greater surface area as compared to spherical molecule.

Explanation of Solution

Non-polar molecule doesn’t have permanent dipole moment. Induced dipole moment is generated in this molecule. This is dispersion forces which is more for molecules with greater surface area. Long molecules have more surface area and so one can interact strongly with other molecule than spherical non-polar molecules.

Conclusion

Long molecules can interact with one another strongly due to having more surface area as compared to non-polar spherical molecules.