二、簡答題:(每題分數如題前說明,每题10分,共40分) 1.(本題總分10%)Please gvetw experimenta eslts to show the existence of real gas.

2.(本題總分10%) Use the principle of corresponding states to suggest the pressure and temperature at which 1.0 mol of CO2 will be in states that correspond to 1.0 mol N2 at 1.0 atm and 25 C. (For N2, Pc = 33.54 atm, Tc=126.3 K, For CO2, Pc = 72.9 atm, Tc = 304.2 K. Pc: critical pressure； Tc: critical temperature)