Table of Contents
What causes gas pressure in a closed container?
The pressure of a gas, in a closed container is the result of the collision of its molecules on the walls of that container. It is important to note that the kinetic energy of each gas molecule depends on its temperature only.
What causes the pressure in the container?
Pressure is caused by the collisions between the atoms of gas and walls of the container as those atoms travel in the confined space. There are three ways to increase the pressure: Add more gas. More molecules mean more collisions.
What causes gas pressure in a container such as a helium balloon?
– An increase in temperature of a gas in a rigid container increases the pressure. Hence, the gas pressure in a container such as a helium balloon arises from the impact of the collisions of the helium atoms between themselves and with the inside surface of the balloon.
What two factors affect gas pressure?
Temperature, pressure, volume and the amount of a gas influence its pressure.
How do you increase pressure in a container?
The pressure exerted by the gas can be increased by: increasing the number of collisions of gas molecules per unit time by increasing the number of gas molecules; increasing the kinetic energy of the gas by increasing the temperature; or decreasing the volume of the container.
What causes pressure in a container full of gas?
If gas is enclosed in a flexible container such as a balloon the volume will increase or decrease until the pressure caused by collisions of gas molecules with the inside wall equals the pressure caused by collisions of atmospheric molecules with the outside wall.
Why does gas pressure increase in a balloon?
The gas molecules are in constant, rapid motion. If gas is enclosed in a flexible container such as a balloon the volume will increase or decrease until the pressure caused by collisions of gas molecules with the inside wall equals the pressure caused by collisions of atmospheric molecules with the outside wall.
What causes gas pressure in terms of kinetic theory?
What causes gas pressure (in terms of kinetic theory)? Gas pressure is caused by the collisions of gas particles with the walls of the container. According to kinetic theory, molecules inside a volume (e.g. a balloon) are constantly moving around freely.
Explanation: The larger the number of collisions per area of the container, the larger the pressure: Pressure = Force Area or p = F A. The direction of this force is always perpendicular to the surface of the container at every point. The video below gives a good explanation of gas pressure.