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Secondary Cells

Write the equ...

Question

Write the equation occurring at anode in lead battery.

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Solution

At anode oxidation occurs,
$P b (s) \to P b^{+ 2} (a q) + 2 e^{-}$
$P b^{+ 2} (a q) + S O_{4}^{- 2} (a q) \to P b S O_{4} (s)$
Overall reaction : $P b (s) + S O_{4}^{- 2} (a q) \to P b S O_{4} (s) + 2 e^{-}$

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