Q3(a)(i). Polarography: principle, half-wave potential, resolving close waves
Discuss the principle of polarographic analysis. Explain the meaning and significance of half-wave potential (E½). If E½ values of two electroactive species are too close, how can these be separated?
Model answer
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All parts of Question 3
- 3(a)(i) Polarography: principle, half-wave potential, resolving close waves10 marks
- 3(a)(ii) Magnetic data and the structure of lanthanide complexes10 marks
- 3(b)(i) Phase, component and degree of freedom5 marks
- 3(b)(ii) Components of aqueous NaCl + KBr, then with KCl and NaBr5 marks
- 3(c) Rate constants of C ⇌ D from the relaxation time and K10 marks