What are the ideal gas and real gas? - QS Study
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Ideal Gas:
The gas which obeys all gas laws i.e. Boyle’s Law and Charle’s Law at all temperature and pressure is known as Ideal Gas.

Real Gas:
The gas which does not follow the gas laws i.e. Boyle’s Law and Charle’s Law at all temperature and pressure is called Real Gas. For example: H2, N2, O2 are real gases.

 

Difference between Ideal gas and Real Gas is as follow:

Ideal Gas:

  • Ideal Gas obeys all gas laws under all conditions of temperature and pressure.
  • In ideal gas the volume occupied by the molecules as compared to the total volume occupied by the gas it’s negligible.
  • The force of attraction among the molecules of the gas is negligible.
  • It obeys ideal Gas equation PV=nRT.

Real Gas:

  • Real Gas obeys gas laws only under low pressure and high temperature.
  • In real gas, the volume occupied by the molecules is not negligible as compared to the total volume occupied by the gas.
  • The force of attraction among the molecules is not negligible at all temperatures and pressure.
  • It obeys Vander Waals Eqn:

eqn