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Can pressure of a gas ever be zero?

Updated: 8/10/2023
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12y ago

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Gas pressure (in a container, for example) is due to the atoms or molecules bumping against the walls of a container. At absolute zero, the molecules have no internal energy, no speed - they won't move.

In practice, you can approach absolute zero, but you can never quite reach it.

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14y ago
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12y ago

If the gas were reduced to a state where the molecules ceased all motion, the pressure would be zero. In practical terms this is probably impossible.

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Q: Can pressure of a gas ever be zero?
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What is the temperature at which an ideal gas occupies zero pressure?

Absolute Zero


Why would the pressure be 0 for absolutle zero?

The pressure of a gas is exerted on the walls of its container by the movement of the molecules making up the gas. The higher the temperature, the faster the particles move, increasing the pressure exerted on the sides of the container. As the temperature decreases, the movement of the gas particles slows down, reducing the pressure. At absolute zero, the gas particles would be completely frozen so that no particles would be hitting the sides of the container and the pressure exerted by the gas would be zero. This is all theoretical since absolute zero cannot yet be reached, and gas would not actually be able to have a pressure of zero.


Could the volume of a gas ever be equal to zero?

No.


What would the volume and pressure of an ideal gas be at absolute zero temperature IF an ideal gas actually existed?

Here's the ideal gas law: PV = nRT If T is zero, then PV must be zero; assuming the volume is nonzero, then for PV to be zero the pressure must be zero. However, this is only true for an ideal gas. For a real gas other factors come into play at low temperatures, and they begin to deviate from the ideal gas law. Also, all real gases liquify above absolute zero, and liquids don't obey the ideal gas law at all.


What pressure would you expect in a rigid container of 0 centigrade gas if you cooled it by 273 centigrade?

You can never get to -273 C or 0 Kelvin. But if you could, the pressure would be zero


How to measure the pressure of a gas in atmospheres at different temperatures in C Can you predict the temperature at which the pressure would equal zero?

-322


If a certain amount of gas fills a 1.0 liter container and exerts a pressure on the walls of 2.0 Nm2 at 20 degrees celsius what would the pressure theoretically be at absolute zero?

Zero. PV = nRT. T = 0, so nRT = 0, and thus PV must be zero also. Since we know the volume is not zero, the pressure must be zero.


What is the volume of gas when the temperature is 0 Celsius?

Answer: computer says no?Answer: Also zero. This is hypothetical; an extrapolation. No real substance can be cooled all the way to zero Kelvin, and no gas would remain a gas at temperatures approaching that temperature.


How cold is ultimate zero?

Absolute zero is -273 degrees Celsius A: Actually, absolutely zero reflects a state in which an ideal gas exerts no pressure on its containment. As gas pressure come from movement, this temp depends on which components of the gas you're looking at: molecules, atoms, sub-atomic particles, etc. We have dropped electrons down as far as one picokelvin as of this writing. The actual number for ultimate zero, then, is not truly obtainable and is a theoretical constant.


Do gases exert pressure?

Yes. Any sample of gas in a closed container will exert pressure on the container, as long as the temperature of the gas is above absolute zero. You can force the gas into a smaller volume by shrinking the container, but that action raises the temperature and pressure of the gas.


Boyles law states that the volume of a gas is inversely proportional to its pressure if?

Boyle's law states that the volume of a gas is inversely proportional to its pressure if the temperature remains constant.


What does it mean that absolute zero decreases by 1 over 273 volumes per degree?

The way you state it, it is confusing. Absolute zero is a fixed temperature; therefore it doesn't increase or decrease.The volume of a gas will increase or decrease with pressure. The change in volume is such that if you extrapolate, it should theoretically have a volume of zero at approximately minus 273 degrees (Centigrade).The way you state it, it is confusing. Absolute zero is a fixed temperature; therefore it doesn't increase or decrease.The volume of a gas will increase or decrease with pressure. The change in volume is such that if you extrapolate, it should theoretically have a volume of zero at approximately minus 273 degrees (Centigrade).The way you state it, it is confusing. Absolute zero is a fixed temperature; therefore it doesn't increase or decrease.The volume of a gas will increase or decrease with pressure. The change in volume is such that if you extrapolate, it should theoretically have a volume of zero at approximately minus 273 degrees (Centigrade).The way you state it, it is confusing. Absolute zero is a fixed temperature; therefore it doesn't increase or decrease.The volume of a gas will increase or decrease with pressure. The change in volume is such that if you extrapolate, it should theoretically have a volume of zero at approximately minus 273 degrees (Centigrade).