What type of chemical reaction results in the oxidizing agent being reduced and the reducing agent being oxidized?

• A. oxidation reaction
• B. redox
• C. reduction reaction
• D. precipitation

Answer: (B)

Redox reactions involve transfer of electrons between species. In such a reaction, the oxidizing agent accepts electrons and is reduced, while the reducing agent donates electrons and is oxidized. Because both the oxidation and the reduction occur in the same event, this paired process is described as a redox reaction. A classic example is zinc metal reacting with copper(II) sulfate: zinc is oxidized (loses electrons) and copper(II) is reduced (gains electrons). Oxidation reaction alone or reduction reaction alone describe only one half-reaction, not the paired process, and precipitation is about forming a solid and doesn’t inherently involve electron transfer. So the overall type of reaction that fits the description is redox.