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

Answer 1

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.

Answer 2

According to the Ideal Gas Law:

PV = nRT

If the temperature were to reach absolute zero, then the product PV would also have to be zero. Since an ideal gas pretty much assumes point mass, the volume could be zero - or the pressure could be zero - or both.

Answer 3

At absolute zero temperature, an ideal gas would theoretically have zero volume and zero pressure. This is because at absolute zero, the kinetic energy of gas particles would be minimal, causing them to come to a complete stop and occupy no volume. Since pressure is the result of gas particles colliding with the walls of their container, zero particle movement would result in zero pressure.