On the basis of kinetic theory of gases explain why-- (a) gases exert pressure.(b) the volume of fixed amount of gas at constant pressure increases with rise in temperature.
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b) Temperature and speed of gases are Directly related .
Therefore , By the rise of temperature the speed of gas molecules increases .
The total volume of gas molecules is negligible when compared to the entire volume of the container .
a) Every gas contains large tiny particles called Molecules .
The gas molecules move randomly in all directions with High velocity .
There will be no attractive or repulsive forces among gas molecules .
There will be no effect of gravitational force on the movement of gas molecules .
Pressure of gas is due to collisions of the gas molecules on the walls of the container .
All collisions are perfectly elastic .
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