Using Pv=nRT how can it be determined whether a gas is real or ideal?

Question

Using Pv=nRT how can it be determined whether a gas is real or ideal?

Answer 1

It is called the ideal gas law. With a real gas there are correction factors. To do this accurately you will have to use partial derivatives and other stuff. Because as one variable changes so do the others. To see if it is an ideal gas change the pressure, temperature and or volume and see if the equation holds true. Conduct an experiment.

Answer 2

An ideal gas is a theoretical gas which perfectly fits into the equation PV= nRT.

An ideal gas is different from a real gas in many ways. An ideal gases' mass

can be disregarded in the equation because it has none; this is because an ideal

gas is said to be a particle and particles do not have any mass. Ideal gases

obtain no volume unlike real gases which obtain small volumes. Also, since

ideal gas particles excerpt no attractive forces, their collisions are elastic.

Real gases excerpt small attractive forces. The pressure of an ideal gas is

much greater than that of a real gas since its particles lack the attractive

forces which hold the particles back when they collide. Therefore, they collide

with less force. The differences between ideal gases and real gases can be

viewed most clearly when the pressure is high, the temperature is low, the gas

particles are large, and when the gas particles excerpt strong attractive forces.

Answer 3

Yes . if that law is followed , there is no problem

Practically, I use always that law and deviations are only necessary for High Pressures or very accurate measurements

Answer 4

pv=nrt , it is an ideal gas equation

it is not applicable in case of real gases



van der waal developed the equation of state for real gas as

    (p+an^2/v^2)  (v - nb)  = nrt

practically there is not a single ideal gas but for numericals we assume it to be ideal.