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In the following redox reaction, which compound is acting as a reducing agent? N₂H₄ + 2H₂O₂ N₂ + 4H₂O

Options

  1. AH₂O₂
  2. BN₂H₄
  3. CN₂
  4. DH₂O

Correct answer

B. N₂H₄

Step-by-step solution

In the given reaction, the oxidation state of nitrogen in N₂H₄ is -2 and it changes to 0 in N₂ . Since the oxidation state of nitrogen increases, N₂H₄ undergoes oxidation. The oxidation state of oxygen in H₂O₂ is -1 and it changes to -2 in H₂O . Since the oxidation state of oxygen decreases, H₂O₂ undergoes reduction. The species that undergoes oxidation acts as a reducing agent. Therefore, N₂H₄ is the reducing agent. Answer: N₂H₄

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