Real Gas Definition and Examples

Real Gas vs Ideal Gas

A real gas does not behave as an ideal gas because the gas molecules interact with each other.
A real gas does not behave as an ideal gas because the gas molecules interact with each other. INDIGO MOLECULAR IMAGES, Getty Images

Real Gas Definition

A real gas is a gas that does not behave as an ideal gas due to interactions between gas molecules.

Also Known As: nonideal gas

Real Gas Example: While cool air at ordinary pressure behaves like an ideal gas, increasing its pressure or temperature increases the interactions between molecules, resulting in real gas behavior that cannot be predicted reliably using the ideal gas law.