Recharging a battery means forcing a spontaneous redox reaction to run backwards—in the nonspontaneous direction—once all the reactants have been used up. In Practice Problem 10.24, you considered a battery made from lead and copper.

(a) Write the spontaneous redox reaction for this battery.

(b) Write the recharging reaction for this battery.

Data from Problem 10.24

Consider a battery made from lead, Pb, and copper, Cu, along with Pb²⁺ ions and Cu²⁺ ions. In such a battery, what is the oxidizing agent, and what is the reducing agent?