State the fundamental assumptions of the kinetic theory of gases
Answers
The simplest kinetic model is based on the assumptions that: (1) the gas is composed of a large number of identical molecules moving in random directions, separated by distances that are large compared with their size; (2) the molecules undergo perfectly elastic collisions (no energy loss) with each other
Answer:
The basic assumptions of the kinetic theory of an
ideal gas:
(1) A gas of a pure material consists of an extremely
large number of identical molecules.
(2) A gas molecule behaves as an ideal particle, ie., it
has mass but its struchure and size can be ignored as
compared with the intermolecular separation in a
diute gas and the dimensions of the container
(3) The molecules are in constant random motion with
various velocities and obey Newton's laws of
motion.
4) Intermolecular forces can be ignored on the average
so that the only forces between the mo
lecules and
the walls of the container are contact forces during
collisions. It follows that between successive colli-
sions, a gas molecule travels in a straight line with
constant speed.
(5) The collisions are perfectly elastic conserving total
momentum and kinetic energy, and the duration of
a collision is very small compared to the time
interval between successive collisions