Answer:
(a) Lead storage batteries It is a secondary
battery. A typical 12-V battery consists of six cells connected in series, each
cell providing a potential of about 2 V. The anode, a series of lead grids
packed with spongy lead, and the cathode a second series of grids packed with
lead dioxide, dip into the electrolyte (which is an aqueous solution of 38% by
weight.) When the cell is discharging (providing current) the reactions are
Anode
[1]
Cathode
Overall
[1]
(b)
[3]
Or
(a)
[2]
(b) Cell reactions
Oxidation
Reduction
[1]
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