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Postulates of the Kinetic Theory of Gases. The molecules in a gas are small and very far apart. Most of the volume which a gas occupies is empty space. Gas molecules are in constant random motion. Just as many molecules are moving in one direction as in any other. Molecules can collide with each other and with the walls of the container.
- 10.5: Kinetic Molecular Theory of Gases - Chemistry LibreTexts
Understanding Kinetic Molecular Theory can help us identify...
- 1.4: The Kinetic Molecular Theory of Ideal Gases
Postulates of the Kinetic Molecular Theory. Gases are...
- 10.5: Kinetic Molecular Theory of Gases - Chemistry LibreTexts
5 Postulates of Kinetic Theory. Molecules move continuously and randomly in straight lines in all directions and various speeds. -- Properties of a gas that depend on motion of molecules, such as pressure, will be the same in all directions.
Understanding Kinetic Molecular Theory can help us identify when a gas will behave like an ideal gas, and when it will deviate and not behave like an ideal gas. There are five postulates to the Kinetic Molecular Theory, and gases will deviate from the ideal gas law when these postulates break down.
The kinetic theory of gases is a simple classical model of the thermodynamic behavior of gases. It treats a gas as composed of numerous particles, too small to see with a microscope, which are constantly in random motion.
Postulates of the Kinetic Molecular Theory. Gases are composed of molecules that are in continuous motion, travelling in straight lines and changing direction only when they collide with other molecules or with the walls of a container. The molecules composing the gas are negligibly small compared to the distances between them.
Kinetic theory of gases, a theory based on a simplified molecular or particle description of a gas, from which many gross properties of the gas can be derived. Such a model describes a perfect gas and its properties and is a reasonable approximation to a real gas.
The state of the gas can be described by a few macroscopically measurable quantities that completely determine the system. The volume of the gas in a container can be measured by the size the container. The pressure of a gas can be measured using a pressure gauge. The temperature can be measured with a thermometer.
