Unformatted text preview: base reactions are not feasible? Pick one example of a favorable reaction and one example of an unfavorable reaction and determine the equilibrium constant for each. 4. Suppose you wish to prepare a precipitate of calcium oxalate, CaC 2 O 4 . To what range of pH levels should you adjust the pH to minimize its solubility? Briefly defend your choice. 5. Masking agents are used in many analytical procedures as a way to prevent one metal ion from interfering in an analysis for a second metal ion. The idea is to add a ligand that binds strongly to the interfering metal ion, leaving the other metal ion free in solution. One common masking agent is cyanide, CN-. Using a ladder diagram, determine if there are conditions where cyanide can prevent Ni 2+ from interfering in an analysis for Fe 3+ . If so, then state the range of conditions....
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This note was uploaded on 04/02/2012 for the course CHEMISTRY 222 taught by Professor Mcdonald during the Fall '11 term at University of Illinois, Urbana Champaign.
- Fall '11
- Analytical Chemistry