(N/A) The ideal gas model is based on the microscopic behavior of gas particles,defined by the following postulates:
$(1)$ $A$ gas consists of a large number of microscopic particles called molecules. These molecules may be monoatomic,diatomic,or polyatomic. For a chemically stable gas,all molecules are identical.
$(2)$ Molecules are considered as perfectly rigid spheres or point particles with no internal structure.
$(3)$ Molecules are in constant,random motion,colliding with each other and the walls of the container.
$(4)$ The motion of gas molecules follows Newton's laws of motion.
$(5)$ The total number of molecules in a given sample is extremely large.
$(6)$ The actual volume occupied by the molecules is negligible compared to the total volume of the container.
$(7)$ Intermolecular forces are negligible except during collisions.
$(8)$ Collisions between molecules and between molecules and the container walls are perfectly elastic. The duration of a collision is negligible compared to the time between successive collisions.