The Ideal Gas Laws

An ideal gas law is modeled on the Kinetic Theory of Gases which has four postulates.

• Gases consist of small particles which are in continuous motion.
• The volume of the molecules present is negligible compared to the total volume occupied by the gas.
• Intermolecular forces are negligible.
• Pressure is due to the gas molecules colliding with the walls of the container.  

Real gases are different. They deviate from Ideal Gas Behavior because at low temperatures the gas molecules have less kinetic energy so they attract each other. In addition, at high pressures the gas molecules are forced closer together so that the volume of the gas molecules become significant compared to the volume the gas occupies.

Finally, the equation used to represent the Ideal Gas Law is: PV=nRT
Where R =. 0821

Equation Practice

Ideal Gas Law Help

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