What are the three main postulates of kinetic theory of matter?
As applied to gases, the kinetic molecular theory has the following postulates:
- Gases are composed of very tiny particles (molecules).
- There are no attractive forces between the molecules of a gas.
- The molecules of a gas are in constant, rapid, random, straight-line motion.
What are the postulates of kinetic energy?
The kinetic-molecular theory of gases can be stated as four postulates:
- A gas consists of molecules in constant random motion.
- Gas molecules influence each other only by collision; they exert no other forces on each other.
- All collisions between gas molecules are perfectly elastic; all kinetic energy is conserved.
What are postulates of kinetic theory of gas?
Postulates of kinetic theory of gases. 1) Any gas consist large number of molecules. These molecules are identical, perfectly elastic and hard sphere. 2) Gas molecules do not have preferred direction of motion, their motion is completely random. 3) Gas molecules travels in straight line.
What are the five postulates of kinetic theory?
Five Postulates of KMT. Gas particles have negligible volume compared to the free space between them.. Molecular collisions are perfectly elastic and kinetic energy is conserved. Gas particles experience negligible intermolecular forces, there are no attractive or repulsive forces between particles.
How does the kinetic theory explain gas pressure?
The concept of pressure is explained in kinetic theory as a consequence of kinetic energy of gases. Due to the troublesome motion of the gas molecules, they will collide with each other, some of them shall collide with the container walls and then bounce back and this process continues.
Why gases are more compressible and expandable than liquid and solid?
If we put pressure on a solid or a liquid, there is essentially no change in volume. The kinetic-molecular theory explains why gases are more compressible than either liquids or solids. Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles.