[轉錄][試題] 94下何國榮分析化學丁期末考

看板NTUphy94作者Justee (想像力)時間19年前 (2006/06/26 14:05)推噓5(5推 0噓 2→)

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※ [本文轉錄自 NTU-Exam 看板] 作者: yuncheng42 (低調至上) 看板: NTU-Exam 標題: [試題] 94下何國榮分析化學丁期末考時間: Mon Jun 26 12:43:54 2006 課程名稱︰分析化學丁課程性質︰必修課程教師︰何國榮開課系所︰醫技系、藥學系考試時間︰2006/6/26 10:20-12:10 是否需發放獎勵金：是試題 : (111 points) 1. Explain that, for an acidic solution,direct measurement is less accurate than acid-base titration. 5% 2. Calomel electrode and Pt electrode are used in a titration between Ce+4 and Fe+2. 8% (a) Write down the titration reaction and one of the cell reaction. (b) Explain the following two sentences. "The titration reaction gose to competition. The cell reactions proceed to a negligible extent." 3. Explain that the titration curve of oxidation-reduction is independent of dilution. 5% 4. Explain that in iodometry, starch should not be added until immediately before the equivalence point. 5% 5. Why is iodine almost always used in a solution containing excess I-? 5% 6. Explain that three electrodes are used in volummetry but not in potentiometry. 5% 7. Why is mercury a better working electrode than Pt and Au in reduction reaction? 5% 8. What are the information provided in a polarogram? 5% 9. Why is desirable to wait 1 s after a potential pulse before recording the current in voltammetry? 5% 10.Why is stripping the most sensitive polarographic technique? 5% 11.Why is photomultiplier such a sensitive photodetector? 5% 12.(a) Describe the operation of ELISA. 8% (b) Explain that ELISA has very good sensitivity. 13.Describe the adventage and disadventage of using potodiode array instead of photomultiplier as the chromatography detector. 6% 14.Describe the adventages and disadventages between furnace AA and ICP-AES. 6% 15.Why is deuterium lamp not used in AA? 5% 16.What difference between packed and open tubular column allows much longer open tubular columns to be used? 5% 17.(a) Describe reconstructed total ion chromatogram. 8% (b) What is the adventage of selected ion chromatogram? 18.Why is selected reaction monitoring a very sensitive rwchnique? 5% 19.In HPLC, why is the smaller the packing particle the better the resolution? 5% 20.Explain that a chromatographic separation normally has an optimum flow rate that gives the best separation. 5% -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.7.59 ※ 編輯: yuncheng42 來自: 140.112.7.59 (06/26 12:45) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.239.11

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Justee

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