Kinetic molecular theory
kINETIC MOLECULAR THOERY
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While the ideal gas law deals with macroscopic quantities of gas, the kinetic molecular theory shows how individual gas particles interact with one another. The kinetic molecular theory contains a number of statements compatible with the assumptions of the ideal gas law. It is worthwhile to list them here:
- Molecules are point masses (they have no volume)
- Gas molecules exert no force on each other unless they collide
- Collisions of molecules with each other or the walls of the container do not decrease the energy of the system
- The molecules of a gas are in constant and random motion
- The temperature of a gas depends on its average kinetic energy avg(1/2mv 2) = 3/2kT . In other words, the energy of an ideal gas is entirely kinetic.
- YOUTUBE: https://www.youtube.com/watch?v=DhLyPhAmARU
- Gas behavior is most ideal…
- at low pressures
- at high temperatures
- in non-polar atoms/molecules
- Gas behavior is most ideal…