How does the kinetic-molecular theory explain why 1 mol of

Solution 54P:

Here, we are going to explain the reason of 1 mol of krypton and 1 mol of helium have the same volume at STP by using the kinetic theory.

Step 1:

The main postulates of kinetic-molecular theory are given below:

1. The gas molecule is consist of a large number of individual particles. The volume of each particle is negligible as compare the volume of the container.
2. The individual gas particles are in constant, random, straight-line motion.
3. The collision of the particles are elastic. The collide particles exchange their energy but they do not any energy during friction. Therefore, the kinetic energy of the particle is constant.