Answer:
During the charging of the lead storage battery, the reactions get reversed and the cathode becomes anode and anode becomes cathode.
The reactions during charging that occurs at anode are:
PbSO4(s) +2e → PB(s) + SO4 2-(aq)
The reactions during charging that occurs at cathode are:
PbO2(S) + 2H2O → PbSO2(s) + SO4 2-
The overall reaction of charging can be written as:
2PBSO4(s) + 2H2O(l) → PB(s) + PBO2(s) +2H2SO4(aq)
During the charging of the lead storage battery, concentration of hydrochloric acid (H2SO4) increases because it is regenerated.
Step-by-step explanation:
The lead storage batteries are used in automobiles such as in cars, trucks, buses, etc. In lead storage batteries, the anode is a group of lead plates and cathode is considered as lead dioxide. In lead storage cells the electrolyte is sulfuric acid.