For each of the following reactions: 1) identify the oxidation and reduction half-equations, and 2) balance the equation (adding H+and H2O as needed), 3) find Eo (in volts), and 4) determine whether the reaction is spontaneous under standard conditions. Ag(s) + Cu2+(aq) → Ag+(aq) + Cu(s) Ni(s) + MnO−4(aq) → Ni2+(aq) + Mn2+(aq) Mn2+(aq) + NO−3(aq) → MnO2(s) + NO(g)

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For each of the following reactions: 1) identify the oxidation and reduction half-equations, and 2) balance the equation (adding H+and H2O as needed), 3) find Eo (in volts), and 4) determine whether the reaction is spontaneous under standard conditions.

  1. Ag(s) + Cu2+(aq) → Ag+(aq) + Cu(s)
  2. Ni(s) + MnO−4(aq) → Ni2+(aq) + Mn2+(aq)
  3. Mn2+(aq) + NO−3(aq) → MnO2(s) + NO(g)
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