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When a lead storage battery is discharge...

When a lead storage battery is discharged:

A

`SO_(2)` is evolved

B

`PbSO_(4)` is consumed

C

Lead is formed

D

`H_(2)SO_(4)` is consumed

Text Solution

Verified by Experts

The correct Answer is:
D
The overall reaction for lead storage battery during discharging is
`Pb(s) + PbO_(2)(s) + 2H_(2)SO_(4)(aq) to 2PbSO_(4)(s) + 2H_(2)O(g)`
Hence, `H_(2)SO_(4)` is consumed when lead storage battery is consumed.
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Knowledge Check

  • In a lead storage battery

    A
    `PbO_(2)` is reduced to `PbSO_(4)` at the cathode.
    B
    Pb is oxidised to `PbSO_4` at the anode.
    C
    Both electrodes are immersed in the same aqueous solution of `H_2 SO_4`.
    D
    All the above are true.

  • When lead storage battery is discharged

    A
    `SO_(2)` is evolved
    B
    Lead sulphate is consumed
    C
    lead is formed
    D
    Sulphuric acid  is consumed

  • When a lead storage battery is recharged

    A
    Pb is formed
    B
    `H_(2)SO_(4)` is formed
    C
    `H_(2)SO_(4)` is consumed
    D
    Both (1) & (2)

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