Photo AI
The reaction which occurs at the anode when the battery is recharging is A - VCE - SSCE Chemistry - Question 15 - 2011 - Paper 1
Question 15
The reaction which occurs at the anode when the battery is recharging is A. PbSO₄(s) + 2e⁻ → Pb(s) + SO₄²⁻(aq) B. Pb(s) + SO₄²⁻(aq) → PbSO₄(s) + 2e⁻ C. PbSO₄(s) + 2H... show full transcript
Worked Solution & Example Answer:The reaction which occurs at the anode when the battery is recharging is A - VCE - SSCE Chemistry - Question 15 - 2011 - Paper 1
Step 1
C. PbSO₄(s) + 2H₂O(l) → PbO₂(s) + 4H⁺(aq) + SO₄²⁻(aq) + 2e⁻
Answer
The correct reaction at the anode during battery recharging involves the conversion of lead sulfate (PbSO₄) back to lead dioxide (PbO₂). This process also generates sulfate ions (SO₄²⁻) and protons (H⁺), while releasing electrons. The balanced half-reaction illustrates the transformation and specifies how the reactants yield the products along with the release of electrons, which is crucial for the restoration of the battery's charge.