✔ 最佳答案
Reduction is a process that a substance gains electrons.
Oxidizing agents is a substance that gains electrons.
Therefore, oxidizing agents ALWAYS undergo reduction. They are reduced.
Oxidation is a process that a substance loses electrons.
Reducing agent is a substance that loses electrons.
Similarly, reducing agents ALWAYS undergo oxidation. They are oxidized.
You should first find out whether a substance is a reducing agent or an oxidizing agent(Just memorizes those in your textbook). Then you will know whether it undergoes reduction or oxidation.
For example,
acidified potassium permanganate is an oxidizing agent.
Thus it ALWAYS undergoes reduction and being reduced.