103. Solving a chemistry problem
252. Using the answers indicated by letters, select the reagents that, with the ions listed below, give oxidation-reduction reactions:
1. Mn2 A. iodine solution
2. Bi3 B. tin (II) chloride
3. AsO43- C. sodium bismuthate
4. AsO33- D. hydrogen peroxide
5. Hg2 E. silver chloride
6. Cr3 F. potassium iodide
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