The overall reaction for the lead storage battery is as follows: Pb(s) + PbO_2 (

Question

The overall reaction for the lead storage battery is as follows: Pb(s) + PbO_2 (s) + 4H^+(aq) + 2SO_4^2-(aq) implies 2PbSO_4(s) + 2H_2O(l) When the battery discharges, which of the following statements is true? Pb is formed at the anode. The pH decreases. PbO_2 is reduced at the anode. SO_4^2- is the reducing agent. PbO_2 is the oxidizing agent. A strip of iron is placed in a 1 M solution of iron(II) sulfate, and a strip of copper is placed in a 1 M solution of copper(II) chloride. The two solutions are connected with a salt bridge, and the two metals are connected by a wire. Reduction Half-Reaction E degree (V) Fe^2+(aq) + 2e^- implies Fe(s) -0.41 Cu^2+(aq) + 2e^- implies Cu(s) 0.34 Which of the following takes place? The Fe(II) concentration of the iron half-cell decreases. Chlorine is produced at the iron electrode. Chlorine is produced at the copper electrode. Copper atoms deposit at the cathode. Sulfur deposits at the iron electrode.

Explanation / Answer

27. E) PbO2 is the oxidizin agent.

28. (C) Chlorin is produced at the copper plate

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