课程名称︰物理化学上 课程性质︰必修 课程教师︰陈振中 开课学院： 开课系所︰农化系 考试日期（年月日）︰99/10/21 考试时限（分钟）：110 mins 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 1.Calculate the expansion coefficients α and the isothermal compressibility κ for an ideal gas.(10%) 2.Derive the expression gor van der Waals constants a and b in terms of the critical temperature and pressure.(15%) 3.Two moles of ideal monatomic gas at 300 K are expanded from 2.0 bar to 1.0 bar. Calculate (a) the work done isothermally and reversibily by system, and (b) the work done against a constant pressure of 1.0 bar.(16%) 4.Calculate the temperature increase and final pressure of helium if a mole is compressed adiabatically and reversibly from 44.8 L at 0℃ to 22.4L.(16%) 5.An ideal monatomic gas at 300 K and 1 bar is expanded in a reversible adiabatic process to a final pressure of 0.5 bar. Calculate q per mole, w per mole, and ΔU.(15%) 6.What is the heat evolves in freezing water at -10℃.(12%) Given that H2O(l)=H2O(s) ΔH°(273K)=-6004 J/mol Cp(H2O,l)=75.3 J/mol K Cp(H2O,s)=36.8 J/mol K 7.(a)Show that the work done by an ideal gas in a reversible adiabatic expansion from (P1,V1) to (P2,V2) is w=(P2V2-P1V1)/(γ-1) (b)If Pi=10 bar, Pf=2 bar, Vi=1L, Vf=3.16L, and γ=5/3, how much is work done?(16%) --

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