課程名稱︰普通化學已
課程性質︰系定必修
課程教師︰牟中原
開課學院：工學院
開課系所︰材料系
考試日期（年月日）︰2007/06/26
考試時限（分鐘）：120分鐘
是否需發放獎勵金：是!謝謝
（如未明確表示，則不予發放）
試題 :
Total points : 110
1. The following therodynamic data for 298K. Use these data to determine Keq
at 85 ℃ for the reaction (15%)
CO2(g) +SF4(g) <=> CF4(g) + SO2(g)
o o
ΔHf ,kJ/mol S ,J/mol．K
SF4 -763 299.6
CF4 -925 261.6
CO2 -393.5 213.6
SO2 -296.8 248.1
2. Sketch a plot of ΔG as a function of absolute temperature for (a) an
exothermic spontaneous reaction, (b) an exothermic nonspontaneous reaction,
(c) an endothermic spontaneous reaction, (d) an endothermic nonspontaneous
reaction. What information can be obtained from the slope and intercept of
each plot?(9%)
3. Write down the chemical reaction for the following reactions:(12%)
A. The reaction between calcium carbide and water
B. The reaction between of borax(硼砂) and sulfuric acid
C. The reaction between potassium superoxide and carbon dioxide
D. Production of lead dioxide "by the action of an alkaline solution of
calcium hypichlorite on lead(II) hydroxide"
4. Explain the followings (22%)
A. Explain why carbon can forn single, double and triple bonds but Si can
form Si-Si single bond only
B. The Co(NH3)6 3+ ion is diamagnetic but Fe(H2O)6 2+ is paramagnetic.
Explain.
C. Write down the structureal formula of Al2Cl6 and explain its chemical
bonding.
D. The pressure of gaseous Al2Cl6 more rapidly than would be predicted by
ideal gas law. Explain this behavior.
E. On a hot day, your friedn suggest open the door of refrigerator to cool
your kitchen. Will this work? Explain your answer in terms of principle
of thermodynamics. (4%)
F. Explain why one of the cis-trans isomers [CoCl2(en)2] exhibits optical
isomerism and the other does not. Which is which?
G. One of the following compounds has a yellow color,and the other is
violate: [Cr(H2O)6]Cl3 and [Cr(NH3)6]Cl3. Which do you think is the
yellow compound, and which is the violet? Explain.
5. Name the following coordination compounds.(12%)
a.[C(H2O)5Br]Cl2
b.K3[Co(CN)6]
c.[Fe(NH2CH2CH2NH2)2(NO2)2]Cl
d.[Pt(NH3)4I2][PtI4]
6. Describe the Hall process of production of Aluminium. Write down the
reactions inthe reactions int anode and cathode. Explain the role of
Na3AlF6. (8%)
7. Consider the isothermal, reversible, and constant-pressurre vaporization of
1 mol of water at 100 ℃ and 1 atm, calculate ΔU, ΔH, ΔS, and ΔG for
the process. Also calculate the heat absorbed and the work done by the
system. (Molar heat of vaporization for water is 40.6 kJ; assume water
vapor behaves ideally) (12%)
8. A sphere nanoparticle is made of n atoms. The radius of atom is ro. Derive
the number of atoms on the surface and the fraction of surface atoms of a
sphere nanoparticle. (8%)
9. Take gold nanoparticles as an example to briefly describe its synthesis,
characterization adn application. (12%)
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