Analytical Chemistry (2) mid-term 考古題
1. Simply describe or define the following terms:
Standard electrode potential, Formal potential
Galvanic cell, Electrolytic cell
Daniel gravity cell
Standard hydrogen electrode
Alkaline error and Acid error, Asymmetry potential in glass pH electrode
Selectivity coefficient
General redox indicator, specific redox indicator
ISFETs
Auxiliary reducing agent
liquid junction potential, gas sensing probes
p-ion electrode, overpotential, IR drop, limiting current, current density
Depolarizer
2. Writing the shorthand notations of saturated calomel electrode (SCE) and standard
hydrogen electrode (SHE).
3. (a) The concentration and kinetic polarization
(b)
Electrogravimetry with and without potential control.
(c) Concentration profile in Fig 20-3
4. Principles of ascorbic acid titration
5. redox titration curve and calculations
6 Homework of lemon cell etc.
7. Examples and Features of textbook
8. Discuss the calibration method and standard addition methods.
9. controlled-potential and current coulometry and
coulometric titration
10. A 0.500 g sample of toothpaste was boiled with a 50 ml solution
containing a citrate buffer and NaCl to extract the floride ion. After
cooling, the solution was diluted to exactly 100 ml. The potential of a
selective ion system in a 25.0 ml aliquot of the sample was found to
be 0.4965V. The addition of a 2.0 ml of a solution containing 0.0545
M F- caused the potential to change to 0.4317 V. Calculation the
weight percentage of F- in the toothpaste sample. (F MW 19)
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11. Briefly describe the principle, reactions and interferences of the Karl
Fischer reagent for water determination.
12. The procedures of coulometric Karl Fischer titration
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