An ideal gas is defined as a gas that obeys gas laws at all pressure and temperature conditions. Ideal gases have velocity and mass. They do not have volume. A real gas is a gas that does not obey gas laws at all standard pressure and temperature conditions.
Following are the ways to differentiate real gases from ideal gases:
- Real gases have inelastic collisions, while ideal gases have elastic collisions.
- All the gas molecules of real gas are not identical, while all the gas molecules of an ideal gas are identical.
- The shape of the gas molecules in real gases are not spherical, while the shape of the gas molecules in ideal gases,
- They are all spherical.