Question

What is the oxidizing agent in the reaction Zn₂H → Zn₂+2H?

1) Zn
2) H
3) Zn₂
4) H₂
5) this is not a redox reaction

Answer 1

The oxidizing agent in the reaction Zn + 2H⁺ → Zn²⁺ + H₂ is hydrogen (H), as it gains electrons during the reaction.Therefore, the correct answer is option 2: H.

Step-by-step explanation:

The question asks what the oxidizing agent is in the reaction Zn + 2H⁺ → Zn²⁺ + H₂. In a redox reaction, the substance that is reduced and gains electrons is called the oxidizing agent. From the provided information, we can see through the half-reaction Zn → Zn²⁺ + 2e⁻, zinc is being oxidized by losing electrons. Consequently, the other reactant, which is hydrogen in its ionic form (H⁺), is reduced as it gains electrons to form H₂ gas. Since hydrogen ions gain electrons, they act as the oxidizing agent.

Therefore, the correct answer is option 2: H.