The Van der Waals equation-of-state for real gases may be written as P = RT(Vm – b)-1 – a(Vm)-2, where P denotes pressure, T is temperature, Vm denotes molar volume, and 'a' and 'b' are parameters (sometimes referred to as the Van der Waals coefficients) that reflect properties of the individual molecules (or atoms) in the gas. Which of the following statements regarding the 'a' and 'b' parameters is not true?

MCQs on thermodynamics in classical mechanics systems. Topics include the first, second, and third laws of thermodynamics, energy, work, enthalpy, and entropy, spontaneity, chemical potential, equilibrium, phase changes, and chemical kinetics.