# Introduction for Module 9 – Gas Mixtures

Textbook: Open Stax Chemistry 2e

Suggested Reading: Chapter 9.3

Learning Objectives:

- Describe how gases combine in a mixture
- Calculate properties of gas mixtures using the relationship between partial and percent composition (mole fraction) of each species
- Define vapor pressure and its relationship to the partial pressure of water within a saturated gas sample
- Calculate how vapor pressure of water contributes to a mixture collected over water

Captions and Attributions:

- Subset of a vapor pressure table showing the dependance of the vapor pressure of water on temperature
- A schematic diagram illustrating different partial pressures of gases in a sample collected over water