A gas exerts pressure on the wall of the container. Explain why?
Answers
Why do gases exert pressure on the walls of their container?
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Originally Answered: Why does gas exert pressure on the walls of a container?
Gases are fluids, they move in random direction no matter what you do,unless you cool it to 0K which is impossible as the lowest temperature achieved by scientists are 0.15K and not below that. It is the coolest temperature recorded in the history of the universe and is created by humans.
Okay coming back, these fluids when they keep flowing,, when flowing they hit each and everywhere possible you could ever imagine of, within themselves and other places. These collisions are perfectly elastic and the energy is passed on to directly the molecule it collides with.
So these gas molecules when colliding with the molecules of the container, exerts the so called “pressure” in the walls in the container.
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Because in the gaseous state, the particles move about randomly at high speed. Due to this random movement, the particles hit each other and also the walls of the container. The pressure exerted by the gas is because of this force exerted by gas particles per unit area on the walls of the container.