→ coldlee :考卷不是收走了嗎= = 01/17 18:46
→ ntuce016 :總有漏網之魚=) 01/17 21:44
課程名稱︰分析化學丙
課程性質︰必帶
課程教師︰何國榮
開課學院：工學院
開課系所︰化工系
考試日期（年月日）︰2012/01/11
考試時限（分鐘）：110分鐘
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1. Suppose that the concentration of NaF and KCl were each 0.10M in the cell.
(15%)
Pb(s)│PbF2(s)│F-(aq)││Cl-(aq)│AgCl(s)│Ag(s)
AgCl(s)+e-→Ag(s)+Cl-(aq) Eo=0.222V
PbF2(s)+2e-→Pb(s)+2F-(aq) Eo=-0.350V
Ag+(aq)+e-→Ag(s) Eo=0.799V Ksp for AgCl=1.8*10^(-10)
Pb2+(aq)+2e-→Pb(s) Eo=-0.216V Ksp for PbF2=3.6*10^(-8)
(a) Using the half-reactions 2AgCl(s)+2e-→2Ag(s)+2Cl-(aq) and
PbF2(s)+2e-→Pb(s)+2F-(aq), calculate the cell voltage.
(b) Now calculate the cell voltage by using the reactions
2Ag+(aq)+2e-→2Ag(s) and Pb2+(aq)+2e-→Pb(s).
(c) Explain that the standard reduction potential of AgCl is smaller than the
standard reduction potential of Ag+.
2. (a)Explain that junction potential is one of the major errors in pH
measurement.
(b)Draw the line diagram of a glass combination pH electrode. (10%)
3. In which technique, atomic absorption or atomic emission, is flame
temperature stability more critical? Why? (6%)
4. Explain that the fluorescence and phosphorescence come at lower energy than
absorpton (the excitation energy). (6%)
5. Explain that laser induced fluorescence is a technique with very high
sensitivity. (6%)
6. (a)Explain the working principle of photomultiplier.
(b)The condition that photodiode would be a better detector than
photomultiplier. (10%)
7. What is the major advantage of FT-IR in comparison with scanning IR? (6%)
8. Explain that deuterium lamp is used in UV but not in AA. (6%)
9. Explain that a collision cell is not often equipped with a high resolution
ICP-MS. (6%)
10. What is selected reaction monitoring? Why is it also called MS/MS? Why
does it improve the signal/noise ratio for a particular analyte? (15%)
11. What is the difference between a reconstructed total ion chromatogram, and
extracted ion chromatogram, and a selected ion chromatogram? (15%)
12. Explain that split injection in GC provides better peak shape than
splitless injection without solvent trapping. (7%)
13. Describe the two major factors which affect the resolution of a
chromatogrphy separation. (6%)
14. Explain that open tubular column is often used in GC but not in HPLC. (6%)
15. 課本習題22-28 (12%)
(a)Which column has more theoretical plates?
(b)Which column has a larger plate height?
(c)Which column gives higher resolution?
(d)Which column gives a greater relative retention?
(e)Which compound has a higher retention factor?
(f)Which compound has a greater partition coefficient?
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