When a lead storage battery is charged,what happens?

  • A
    $PbO_2$ is dissolved.
  • B
    The lead electrode is coated with lead sulfate.
  • C
    Sulfuric acid is regenerated.
  • D
    The concentration of the acid decreases.

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Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged?

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