Chapter 10 - Kinetic-Molecular Theory of Gases - Kinetic-Molecular Theory of Gases Thus far in this chapter we have seen several rather remarkable

Chapter 10 - Kinetic-Molecular Theory of Gases -...

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Kinetic-Molecular Theory of Gases Thus far in this chapter we have seen several rather remarkable features of gases: Gases follow the ideal gas law regardless of their identity Gases mix to form homogeneous solutions regardless of their identity Dalton‛s Law of Partial Pressures The explanation for all of these features and more can be explained by looking at the behavior of gases on the molecular level. If we were to do this we would find that to a reasonable approximation most gases have the following properties: Gases consist of large numbers of molecules in continuous random motion. The volume of the molecules is negligible when compared to the total volume of the gas. The molecules are neither attracted to nor repelled from each other. Collisions of gas molecules are completely elastic. Therefore, the average kinetic energy of the molecules does not change over time (if the temperature remains constant). The average kinetic energy of the gas molecules is directly proportional to the absolute temperature of the gas. Knowing how these microscopic properties of gases we can understand the macroscopic properties of gases.

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