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Secondary Cells

Lead storage ...

Question

Lead storage battery has anode and cathode respectively made up of:

P b

and

P b O_{2}

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P b O_{2}

and

P b

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both

P b

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both

P b O_{2}

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Solution

The correct option is D $P b$ and $P b O_{2}$
The electrodes of the cells in a lead storage battery consist of lead grids. The openings of the anodic grid is filled with spongy (porous) $P b$ lead. The openings of the cathodic grid is filled with lead dioxide $P b O_{2}$ .

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Similar questions

During discharging of lead-storage acid battery following reaction takes place:

P b (s) + P b O_{2} (s) + 2 H_{2} S O_{4} \to 2 P b S O_{4} (s) + 2 H_{2} O

If 2.5 amp of current is drawn for 965 minutes, $H_{2} S O_{4}$ consumed is:

P b

P b (s)

P b O_{2} (s)

2 H_{2} S O_{4} (a q)

\to

2 P b S O_{4} (s)

2 H_{2} O (l)

P b O_{2}

P b S O_{4} + 2 e \to P b + S O_{4}^{2 -}

P b S O_{4} + 2 H_{2} O \to P b O_{2} + S O_{4}^{2 -} + 4 H + 2 e

H_{2} 3 O_{4}

P b + H_{2} S O_{4} \to P b S O_{4} + 2 H^{+} + 2 e^{-}

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