Ideal gases are a very simple system of noninteracting particles. The only energy involved is the kinetic energy of the gas particles. There is no potential energy.

In engineering applications, the units of P-V energy, also called flow energy, are the units of pressure times volume (pounds-force per square foot times cubic feet), which equals foot-pounds force (ft-lbf). The specific P-V energy of a substance is the P-V energy per unit mass.

The order of decreasing potential energy for a substance is solid < liquid < gas < plasma. The solid state would have the greatest potential energy and least kinetic energy. The plasma state would have the least potential energy and the greatest kinetic energy.

Internal Energy for Ideal Gas But the potential energy is associated with intermolecular forces and is presumed to be zero in an ideal gas where the only molecular interactions are the perfectly elastic collisions between molecules. Therefore the internal energy of an ideal gas is entirely kinetic energy.

Pressure and volume change while the temperature remains constant. Since no work or heat are exchanged with the surrounding, the internal energy will not change during this process. Thus, the internal energy of an ideal gas is only a function of its temperature.

In an ideal gas the inter-molecular collisions are assumed to be absent and the collisions are perfectly elastic. Thus, the gas possesses only translational kinetic energy and hence the internal energy of the ideal gas depends only on temperature.

The Cp – Cv values are same for all ideal gas and their is no largest value for ideal gases.

Types of ideal gas There are three basic classes of ideal gas: the classical or Maxwell–Boltzmann ideal gas, the ideal quantum Bose gas, composed of bosons, and. the ideal quantum Fermi gas, composed of fermions.

From the observations, we can conclude that ratio of specific heats is max for monoatomic gases. Hope this helped you.

water

Water