Which Substance Acts as the Cathode in the Lead-Acid Automobile

question 1

Multiple Choice

Which substance acts as the cathode in the lead-acid automobile battery?
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Pb + PbO₂ + 4H⁺ + SO₄^{2 −} → 2PbSO₄ + 2H₂O

• A) Pb
• B) PbO₂
• C) 4H⁺
• D) SO₄^{2 −}
• E) H₂O

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