試題詳解

76. fn a real gas system, the van der Waals equation is used to consider gas behaviors. van der Waals equation is written as: [P + a(n²/V²)](V - nb)=nRT
Which of the kinetic molecular theory postulates is incorrect in a real gas system so that the
correction factor of pressure is required? P=observed pressure, T=temperature, V=volume of the container, n=mole of the gas, a and b=van der Waals constants, and R=Avogadro constant. a(n²/V²)=correction factor of pressure compared to the ideal gas law.
(A) The particles in a gas are in constant, random motion.
(B) The combined volume of the particles is negligible.
(C) The particles exert no forces on one another.
(D) Any collisions between the particles are completely elastic.

(E) The average kinetic energy of the particles is proportional to the temperature in Kelvins.