Which statement is correct while recharging the automobile battery?
Correct answer: C. Pb is converted to PbSO4
- A. Pb is converted to PbO2
- B. PbSO4 is converted to Ph
- C. Pb is converted to PbSO4
- D. None of the above
Explanation
Pb oxidized to PBSO4When the battery is discharging, it acts as a galvanic cell and the following chemical reaction occurs:Negative:Pb(s) + HSO4- + H2O (l) → 2e- + PbSO4(s) + H3O+(aq)Pb is oxidized.Positive:PbO2 (s) + HSO4- (aq) + 3H3O+(aq) +2e- → PBSO4 (s) + 5H2O (l)
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About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
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