The anode half-reaction occurring during the discharge of a lead storage battery is
Question
The anode half-reaction occurring during the discharge of a lead storage battery is
Solution
The anode half-reaction occurring during the discharge of a lead storage battery is:
Pb(s) + HSO4−(aq) → PbSO4(s) + H+(aq) + 2e−
Here's the step by step process:
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The lead (Pb) at the anode reacts with the sulfate ion (HSO4-) present in the electrolyte (sulfuric acid).
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This reaction forms lead sulfate (PbSO4), which gets deposited on the anode.
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Hydrogen ions (H+) are also produced in this reaction.
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The lead (Pb) loses two electrons (2e-) in this process, which is why it's an oxidation reaction (since oxidation involves loss of electrons). These electrons move through the external circuit to the cathode, producing an electric current.
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