Concept #1:
Permanganate ion is difficult to isolate because it can easily oxidize its aqueous solvent to form MnO2 precipitate.
Concept #2: Pairing the permanganate ion with iron (II) ion or oxalic acid can help with its standardization.
Concept #3: Depending on the pH of the solution, the permanganate ion can be reduced to different forms with varying colors.
Concept #4:
Like other strong oxidizing agents the cerium (IV) ion must first be prepared before it can take part in a redox titration.
Concept #5:
The dichromate ion is not as strong of an oxidizing agent as Ce4+ or MnO4–, but is more readily available and stable.
Concept #6:
The dichromate ion is predominantly used as an oxidizing agent in organic reactions.
Concept #7:
Triiodide ion represents the weakest of the 4 strong oxidizing agents.
