Lead Storage Battery
During discharge of a lead storage battery, both electrodes are converted to:
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More electrochemistry Practice Questions
In a lead storage battery during discharge, the electrolyte density:
In a lead storage battery during discharge, the electrolyte density:
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In a spontaneous redox reaction, electrons flow from:
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For cell: Zn(s)|Zn²⁺(1 M)||Cu²⁺(1 M)|Cu(s), E°(Zn²⁺/Zn) = -0.76 V, E°(Cu²⁺/Cu) = +0.34 V. E°cell is:
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Nernst equation relates electrode potential to:
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In a concentration cell with identical electrodes, driving force arises from:
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Faraday's first law states mass deposited is proportional to:
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About This Question
- Subject
- chemistry
- Chapter
- electrochemistry
- Topic
- lead storage battery
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
PbSO4
- Anode reaction: Pb(s)+SO42−→PbSO4(s)+2e−.
- Cathode reaction: PbO2(s)+SO42−+4H++2e−→PbSO4(s)+2H2O.
- Observation: Both the Lead plate and the Lead Dioxide plate react with Sulfuric acid to form Lead(II) Sulfate (PbSO4).
- Electrolyte Effect: In the process, Sulfuric acid is consumed (S is removed to form sulfate precipitates), leading to a decrease in the density of the acid which can be used to check battery charge status.
This medium difficulty chemistry question is from the chapter electrochemistry, covering the topic of lead storage battery. It appeared in the 2025 exam.
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