Qstnid -I-9-it Is Said That The Assumptions Of Kinetic Theory Are Good For Gases Having Low Densities. Suppose A Container Is So Evacuated That Only One Molecule Is Left In It. Which Of The Assumptions Of Kinetic Theory Will Not Be Valid For Such A Situation? Can We Assign A Temperature To This Gas? - 24: Kinetic Theory Of Gases

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#9
It is said that the assumptions of kinetic theory are good for gases having low densities. Suppose a container is so evacuated that only one molecule is left in it. Which of the assumptions of kinetic theory will not be valid for such a situation? Can we assign a temperature to this gas?
Ans : Two postulates of kinetic theory will not be valid in this case. These are given below:
1. All gases are made up of molecules moving randomly in all directions
2. When a gas is left for a sufficient time, it comes to a steady state. The density and the distribution of molecules with different velocities are independent of position, direction and time.