How to create half reactions?

2016-05-31 12:01 am
Zn+NO2^- ---->NH3+ZN(OH)4^2-

回答 (1)

2016-05-31 12:07 am
The reaction undergoes in alkaline media.

Oxidation half equation : Zn(aq) + 4OH⁻(aq) → Zn(OH)₄²⁻(aq) + 2e⁻
Reduction half equation : NO₂⁻(aq) + 5H₂O(l) + 6e⁻ → NH₃(aq) + 7OH⁻(aq)


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