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Which equation represents the reduction half-reaction in a Daniell cell?

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Q-00083129

Zn(s) -> Zn2+(aq) + 2e-

Cu2+(aq) + 2e- -> Cu(s)

Zn2+(aq) + 2e- -> Zn(s)

Cu(s) -> Cu2+(aq) + 2e-

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