1.

Write the chemistry of reacharging the lead storage battery , highlighting all the meterial that are involved during recharging?

Answer»

Solution :A lead storages battery CONSISTS of anode made up of lead, cathod made up of GRID of lead packed with lead dioxide `(PbO_2)` and 38% solution of sulphuric acid is USED as an electrolyte. When the battery is in use, the following reaction take place :
Anode:`Pb(s) + SO_(4)^(2-)(aq) to PbSO_4(s) + 2E^(-)`
Cathode: `PbO_2(s) + SO_4^(2-) (aq) + 4H^+(aq) + 2e^(-) to 2PbSO_4(s) + 2H_2O(l)`
On charging tha battery, the reverse reaction reaction takes place, i.e. `PbSO_4` depostied on the electrode is converted back into Pb and `PbO_2 and H_2SO_4` is regenerated.


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