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What gets deposited on the plates of a discharged lead-acid battery?

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in Automobile Engineering by (80.5k points)
What gets deposited on the plates of a discharged lead-acid battery?

(a) PbO2

(b) Pb2O4

(c) Pb

(d) PbSO4

The question was posed to me in an international level competition.

My question is from Storage Batteries in division Nonconventional Engines, Conventional Energy Sources & Cooling System of Automobile Engineering

1 Answer

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Best answer
The correct choice is (d) PbSO4

Easiest explanation: PbSO4 gets deposited on the plates of a discharged lead-acid battery. During discharging the reaction happens in the right direction. PbSO4 gets deposited on both negative and positive plates.

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