In which of the following reactions, hydrogen behaves as an oxidizing agent?
Correct answer: C. 2Na + H2 → 2NaH
- A. H2 + Cl2 → 2HCl
- B. H2 + C2H4 → C2H6
- C. 2Na + H2 → 2NaH
- D. N2 + 3H2 → 2NH3
Explanation
In this reaction, hydrogen's oxidation number changes from 0 in H2 to -1 in NaH, indicating it is reduced and thus acts as an oxidizing agent.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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