課程名稱︰分析化學乙上
課程性質︰必修
課程教師︰劉春櫻
開課學院：生命科學院
開課系所︰生化科技系
考試日期（年月日）︰2007.01.19
考試時限（分鐘）：2hr 20min
是否需發放獎勵金：是
（如未明確表示，則不予發放）

試題 :

1. Explain the following terms:(24%)
a) overpotential  b) Ohmic potential  c) biosensor  d) iodometry
e) conditional formation constant  f) junctional potentail  g) salt bridge
h) glass electrode

2. State the prupose of an auxiliary complexing agent in the EDTA titration
   and give an example of its use. (4%)

3. Describe what is done in a displacement titration in the EDTA titration and
   give an example. (4%)

4. Calculate the solubility of CaF2 in water. (10%)
   (Note: Ksp for CaF2 is 3.9*10^-11, Kb for F- is 1.5*10^-11; Kw for H2O is
   1.0*10^-14)

5. What does a mediator do? (5%)

6. Calculate the formation constant Kf for Ag(CN)2-: Ag+ + 2CN- ＝ Ag(CN)2-
   If the cell SCE//Ag(CN)2- (7.50*10^-3M), CN- (0.0250M) / Ag develops a
   potential of -0.625V. (12%)
   (Note: Ag+ + e = Ag(s) E。 = +0.799V; E。SCE = +0.244V)

7. Derive an expression for the equivalent point potential in the titration of
   U4+ with Ce4+. The solution is in H2SO4. (6%)
   (Note: the analytical reaction is U4+ + 2Ce4+ + 2H2O = UO22+ + 2Ce3+ + 4H+)

8. How a CO2 gas sensing electrode can measure the CO2 concentration in
aqueous
   solution? (12%)  有附圖

9. Find the molar solubility S of silver chloride in 0.0286M potassium
nitrate.
   The activity constant for Ksp。= 1.756*10^-10  (12%)

10. Please explain the following two figures.
   (A) 課本圖17-2(8%)  (B)循環伏安法的圖(12%)