課程名稱︰普通化學丙
課程性質︰系定必修
課程教師︰張大釗
開課學院：生農學院
開課系所︰獸醫+植微
考試日期（年月日）︰2010／12／8
考試時限（分鐘）：10:20~11:20(60min)
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.A 15.2 g of NO2(g) is placed in a 10 liter flask at high temperature and the
flask is then cooled to 27。C. some of NO2 can form N2O4(g) dimers. The
final pressure is measured to be 0.5 atm. What pressures and mole
fractions of NO2 and N2O4 are present? (10pts)
2.Assuming particles in constant motion in a L^3 cubic box and no interaction
with each other. Begin with P=F/A. Based on the model, order the kinetic
energy of CH4, N2, Ar, CO2 at room temperature. Copmpare their root mean
square velocities. (16pts)
3.Calculate the ratio of distance traveled between NH3 and HCl from two ends
of a tube, where v_avg=(8RT/πM)^1/2. Is the calculated value consistent
with the experimental result? Why or why not? (10pts)
4.List the necessary empirical terms to derive the collision rate as
Z=4N/Vd^2(πRT/M)^1/2. Calculate the collision rate and the mean free path
for N2 at 27。C and 1.0 atm. Assume that the diameter of an N2 molecular is
250 pm. (16pts)
5.Derive the van der Waals equation for real gas from the ideal gas law PV=nRT
.Explan each term in the van der Waals equation. (8pts)
6.A 30 g mass of liquid cooled from 298。C to 273。C at 1 atm by the
extraction of 3.0 kJ of heat. Calculate △H and estimate the specific heat
capacity of the sample. (8pts)
7.A 10 g Zn interacts with sufficient HCl to produce H2(g) at 25。C and 1 atm.
Calculate w, q, △E, and △H. (8pts)
8.When 2 mol of SO2(g) react completely with 1 mol of O2(g) to form 2 mol of
SO3(g) at 25。C and 1 atm, 198 kJ of energy are released as heat, calculate
△E and △H. (8pts)
9.A 1.5 g of CH4(g) was burn in the bomb calorimeter with C=11.3kJ/。C, the
temp increased by 7.3。C. The value of △H^。f(。右上f右下小字) is
-75kJ/mol for CH3OH(l). Cal the △H^。of combustion per gram for CH4(g) and
CH3OH(l). (12pts)
10.1 mol of an ideal gas at 25。C change from 10 atm to 1 atm under (a)
isothermal, (b)isothermally reversible, and (c)constant volume. Calculate
w, q, △E, and △H. (24pts)
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