Question 12 Which of the following statements is true? O Each real gas deviates from ideal gas behavior differently based on size and intermolecular forces. At very low temperature, interactions between the gas molecules cause the gas to deviate from ideal gas behavior. The van der Waals equation describes the behavior of real gases. O At very high pressure, the volume of the gas molecules causes the gas to deviate from ideal gas behavior. All of the above are true.

Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.