Derivation of Vander Waals equation of State or Equation of State for Real (Imperfect) Gases Many attempts have been made in order to get an equation of state viz. applicable to real gases. A number of equations of state have been suggested to describe the P-V-T relationship in case of real gases. The Van-der-Waals equation … Read more
Collision Diameter, Collision Number, Collision Frequency and Mean Free Path 1. Collision diameter : collision diameter is defined as the closet distance of approach between the centres of the two molecules taking part in a collision. It is denoted by σ. Although the interactions of molecules in a gas are very complicated but here we … Read more
Calculation of Root Mean Square Velocity, Average Velocity and Most Probable Velocity On the basis of kinetic theory of gases, there are three different types of velocities : 1. Average velocity (v) : • The arithmetic mean of the different velocities of all the molecules present in a given gas is called as average velocity. … Read more
Maxwell’s Distribution of Velocities and Energies Maxwell’s Distribution of Molecular Velocities Actually, as a result of collisions, a redistribution of both velocity and energy takes place. • But for convenience, it was supposed that all molecules in a given gas at a given temperature were moving with a constant root-mean-square velocity u. By utilizing probability … Read more
