Ideal gas law, What stands for P

Thread starter kougou
Start date Dec 2, 2012
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Gas Gas law Ideal gas Ideal gas law Law

In summary, the Ideal Gas Law is a fundamental equation that describes the relationship between pressure, volume, and temperature of an ideal gas. It is used in scientific research to predict and calculate gas properties, but has limitations due to its assumptions. The Ideal Gas Law is derived from the Kinetic Molecular Theory, which explains gas behavior based on particle movement and collisions.

Dec 2, 2012

kougou

the ideal gas law, PV=nRT, I have question about the parameter P.
Does P stands for the pressure exert by the gas or the atmospheric pressure?

Say helium gases are enclosed inside a balloon. Then it gives pressure, temperature, and volume data to use the gas law. Does the pressure refer to the pressure of helium or the atmospheric pressure?

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Dec 2, 2012

haruspex

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It's the pressure of the gas.

1. What is the Ideal Gas Law?

The Ideal Gas Law is a fundamental equation in thermodynamics that describes the relationship between the pressure, volume, and temperature of an ideal gas. It is expressed as PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.

2. What does P stand for in the Ideal Gas Law?

In the Ideal Gas Law, P stands for pressure. Pressure is defined as the force per unit area exerted by a gas on its container. It is typically measured in units of atmospheres, pascals, or torr.

3. How is the Ideal Gas Law used in scientific research?

The Ideal Gas Law is used in many areas of scientific research, including chemistry, physics, and engineering. It is used to predict the behavior of gases under different conditions, such as changes in pressure, volume, and temperature. It is also used to calculate the properties of gases, such as their molar mass or density.

4. What are the limitations of the Ideal Gas Law?

While the Ideal Gas Law is a useful tool for understanding the behavior of ideal gases, it has some limitations. It assumes that the gas particles have no volume and do not interact with each other, which is not always the case. It also does not take into account the effects of intermolecular forces or the behavior of non-ideal gases.

5. How is the Ideal Gas Law related to the Kinetic Molecular Theory?

The Ideal Gas Law is derived from the Kinetic Molecular Theory, which explains the behavior of gases based on the movement and collisions of gas particles. The Ideal Gas Law assumes that gas particles are in constant motion and that their average kinetic energy is directly proportional to the absolute temperature. This theory is used to derive the Ideal Gas Law and to explain the macroscopic properties of gases.