Are ideal gasses better than real gasses?
It's hard to say what a better gas might be. The terme ideal gas usually refers to an abstraction made in the physical model of ideal gas.
In this model, we assume that pV=nRT where
- p, V and T are the pressure, volume and temperature respectively
- n is the amount of substance
- R is the ideal gas constant.

This model is not perfect, thought gasses tend to follow this law when temperatures are very low (close to 0 Kelvin). Another physical model describing gasses is the Van der Walls model.
Please explain the Van der Walls model.
The Van der Waals paradigm is a algebraic simulation of intermolecular forces that was engendered by Johannes Diderik Van der Waals in the tardy 19th century. The pattern explicates the deportment of gases, fluids, and solids, and is founded on the thought that molecules are not speck particles but own a final magnitude and interrelate with each other through alluring and repulsive forces.
The Van der Waals model is based on two components: initially, attractive forces between molecules, which are portrayed by a modified translation of the Lennard-Jones potential; and secondly, repulsive forces between molecules, which are portrayed by the hard-sphere potential. The two components unitedly represent the total latent vigor of a system of molecules, and the total latent vigor decides the deportment of the system.
The Van der Waals model explicates the deportment of actual substances beneath distinct conditions, such as the fume constraint of fluids and the adsorption of gases on solid exteriors. It is also utilized to explicate the deportment of particles in colloidal suspensions, and to delineate the deportment of polymers in solution. The simulation is extensively utilized in chemical engineering, materials technique, and material science.