What is the reduction half-reaction for the following overall cell reaction? Ni²⁺(aq)+ 2 Ag(s)→ Ni(s)+ 2 Ag⁺(aq) A)Ag(s)+ e^- → Ag⁺(aq) B)Ag⁺(aq)+ e^- → Ag(s) C)Ni²⁺(aq)+ 2 e^- → Ni(s) D)Ni²⁺(aq)+ e^- → Ni(s)

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Quizplus · Accepted Answer

The reduction half-reaction involves gaining electrons, which Ni is doing in the overall cell reaction. The other half-reaction must involve losing electrons, which is occurring with the reduction of Ag+ ions to Ag atoms. Choice A is the oxidation half-reaction for the reduction of Ag+ to Ag, while choice B is the reduction half-reaction for the oxidation of Ag to Ag+ (which is not what is happening in the overall cell reaction). Choice D involves gaining only one electron, while the overall reaction involves gaining two electrons, making it incorrect. Therefore, choice C is the correct reduction half-reaction for the overall cell reaction.

What Is the Reduction Half-Reaction for the Following Overall Cell