Question

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A£®Òõ¼«£º2H⁺+2e^- = H₂¡ü Ñô¼«£º4OH^- - 4e^- = 2H₂O + O₂¡ü
B£®Òõ¼«£º2H⁺+2e^- = H₂¡ü Ñô¼«£º2Cl^- - 2e^- = Cl₂¡ü
C£®Òõ¼«£ºCu²⁺+2e^- = Cu Ñô¼«£º4OH^- - 4e^- = 2H₂O + O₂¡ü
D£®Òõ¼«£ºCu²⁺+2e^- = Cu Ñô¼«£º2Cl^- - 2e^- = Cl₂¡ü

Answer 1

C