Question

Which conditions can cause non-ideal gas behaviour?

Answer 1

1. Ideal gases are those gases that obey the kinetic theory of gases.
2. While considering the ideal gas behavior the volume occupied by gas molecules and force of attraction between gas molecules are not to be considered.
3. The assumption made for the kinetic theory of gases re as follows:
4. The volume occupied by the gas is considered as a sphere and they are negligibly small.
5. The collision is elastic and no force of attraction is present between gas molecules.
6. The first assumption is valid for nonideal gas when the temperature is low and pressure is high then only the volume occupied by the gas is treated as negligible.
7. In this phase the molecules are compressed and the volume of gas molecules is significant.
8. The second assumption holds its validity when the temperature is high and pressure is low, which reduces the total volume of the gas.
9. This causes the total force of attraction between gas molecules to become significant.
10. Conclusion: At room temperature and pressure most of the real gases are almost like ideal gases. None ideal gas behaviour is caused when the temperature is extremely low or if the pressure is very high.