Collision that governs kinetic model of gas
There will be many molecules collide with the walls and the molecules will hit another molecules after its collision with wall (right?), thus the pressure of the system should be low. How often the collision of what kind happens under what condition?


The collision condition doesn't need to be strictly in Boyle's law condition, that the elastic collision is happened between anything and under any pressure condition. The requirement of large number of molecules but only collision interactions are applied implies that it is just not applicable to apply Boyle's law in kinetic model of gas.