Question

What are the conditions for a real gas to behave most like an ideal gas?

Answer 1

When does real gas behave as ideal gas?

Originally Answered: In which conditions does a gas behave like an ideal gas?

under high pressure and low temperature gas atoms or molecules come closer .

and under low pressure atoms move apart. At the same time when temperature is given then atoms move further apart from one another.

Thus, under low pressure and high temperature gases behave as ideal gases.

Answer 2

The two conditions in which a real gas behaves like ideal gas are, under low pressure and high temperature. At low pressure, the volume of the molecules tends to become negligible in comparison to the total volume of the gas. At high temperature, the intermolecular forces between the particles become less and the kinetic energy increases as velocity of particle increases by the formula K.E. = $\frac 12{mv}^2$, and it behaves like ideal gas.