- #1
kelvin490
Gold Member
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I have a question about deriving the equation of kinetic theory of ideal gas - PV=1/3 Nmcr2, where N is number of atoms, cr is root mean square of atom speed and m is mass of one atom.
In deriving the equation, many textbooks consider the total rate of change of momentum within a certain time and calculate the pressure. However, in actual case the atoms collide on the wall of container separately at different position at different time, how can these changes of momentum be considered as a whole?
In deriving the equation, many textbooks consider the total rate of change of momentum within a certain time and calculate the pressure. However, in actual case the atoms collide on the wall of container separately at different position at different time, how can these changes of momentum be considered as a whole?