The overall reaction for the lead storage battery when it discharges is;
Pb(s) + PbO₂(s) + ⁴H⁺(aq) + 2SO^42-(aq) → 2PbSO₄(s) + 2H₂O(l)
I. PbSO₄ is formed only at the cathode.
II. The density of the solution decreases.
Which statement(s) correctly describe(s) the battery as it discharges?

Question

The overall reaction for the lead storage battery when it  discharges is;
Pb(s) + PbO2(s) + 4H+(aq) + 2SO42-(aq) → 2PbSO4(s) + 2H2O(l)
I. PbSO4 is formed only at the cathode.
II. The density of the solution  decreases.
Which statement(s) correctly describe(s) the battery as it  discharges?

Accepted Answer

Correct answer: B.

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