Final answer:
The statement is true; Potassium permanganate is a common oxidizing agent used as a titrant in redox titrations due to its strong oxidizing properties and noticeable color change upon reduction.
Step-by-step explanation:
The statement that Potassium permanganate is a common oxidizing agent and is used as a titrant in redox titrations is true. Potassium permanganate (KMnO₄) is known for its strong oxidizing properties, especially under acidic conditions. Its standard reduction potential is relatively high, indicating that it can easily gain electrons and thereby oxidize other substances. In redox titrations, potassium permanganate serves as an excellent titrant due to its intense purple color, which changes to nearly colorless upon reduction to Mn₂+. This clear color change at the end point is particularly useful for determining the equivalence point in titrations.
The titration endpoint with potassium permanganate is easily recognizable without the need for an additional indicator because the reduced form of permanganate is colorless in an acidic solution, while the oxidized form is intensely purple. Therefore, the first drop of excess KMnO₄ that remains in the solution after the equivalence point causes a permanent pink or purple tinge to appear, marking the end of the titration.