Chapter 12, Problem 3SC

Interpretation Introduction

Interpretation:

The change in the composition of the mixture of pentane and decane left in an open beaker overnight is to be determined.

Concept Introduction:

The boiling point of a substance depends upon the intermolecular forces and the thermal energy of the molecules.

All atoms and molecules possess dispersion forces which depend upon their molar mass.

Polar molecules have dipole forces between them which depend upon the polarity of the molecules.

Molecules which have a lower boiling point vaporize easily and form what are known as volatile liquids.