Why do real gases deviate from the ideal behaviour. what are the condition under which real gas show ideal behaviour.
Answers
because volume is very less and pressure is more
Causes
1. one of the posulates of kinetic molecular theory of gasses is there are no attractive or repulsive forces among gas molecules.
this statement is not true, under high pressure and low temprature because, under these conditions the volume of gas is very very small and the distance between the molecules are also very small, as a result intermolecular forces develope which cannot be neglected. because of these intermolecular forces, the observed pressure is always smaller than that of ideal gas
2. One of the posulates of kinetic molecular theory of gasses is, the actual volume occupied by gas molecules is negligible when compared to the total volume of the gas. This statement is not true at higher pressure and lower temprature because at these conditions, the volume of gas is extremely small.