Question

In a reaction, the substance undergoing reduction serves as the?

1) electron donor
2) proton donor
3) oxidizing agent
4) reducing agent

Answer 1

The substance undergoing reduction serves as the electron donor in a reaction.

Step-by-step explanation:

In a reaction, the substance undergoing reduction serves as the electron donor. It donates electrons to another substance, causing that substance to be reduced. The substance that is reduced is called the reducing agent.