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A read storage battery is the most impot...

A read storage battery is the most impotant type of secondary cell having a lead anode and a grid of lead packed with `PbO_(2)` as cathode. A `38%` solution of sulphuric acid is used as electrolyte. (Density=1.294 g `mL^(-1))` battery holds 3.5 L of the acid. During the discharge of the battery, the density of `H_(2)SO_(4)` falls to 1.139 g `mL^(-1).(20%H_(2)SO_(4)` by mass)
Write the reaction taking place at the cathode when the battery is in use.

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A read storage battery is the most impotant type of secondary cell having a lead anode and a grid of lead packed with PbO_(2) as cathode. A 38% solution of sulphuric acid is used as electrolyte. (Density=1.294 g mL^(-1)) battery holds 3.5 L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.139 g mL^(-1).(20%H_(2)SO_(4) by mass) Lead storage battery is considered a secondary cell. Why?

A read storage battery is the most impotant type of secondary cell having a lead anode and a grid of lead packed with PbO_(2) as cathode. A 38% solution of sulphuric acid is used as electrolyte. (Density=1.294 g mL^(-1)) battery holds 3.5 L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.139 g mL^(-1).(20%H_(2)SO_(4) by mass) How much electricity in terms of Faraday is required to carry out the reduction of one mole of PbO_(2) ?

Knowledge Check

  • A lead storage battery consists of a lead anode and a grid of lead packed with lead dioxide as the cathode. The electrolyte taken is 39% H_(2)SO_(4) by mass having a density of 1.294 g mL^(-1) . The battery holds 3.5 L of the acid. During the discharge of the battery, the density H_(2)SO_(4) falls from 1.294 g mL^(-1) to 1.139 g mL^(-1) which is 20% H_(2)SO_(4) by mass Q. The reacton occurring at the andoe during charging is

    A
    `Pb^(2+)+2e^(-)toPb`
    B
    `Pb^(2+)+SO_(4)^(2-)toPbSO_(4)`
    C
    `PbtoPb^(2+)+2e^(-)`
    D
    `PbSO_(4)+2H_(2)Oto2PbO_(2)+4H^(+)+SO_(4)^(2-)+2e^(-)`

  • A lead storage battery consists of a lead anode and a grid of lead packed with lead dioxide as the cathode. The electrolyte taken is 39% H_(2)SO_(4) by mass having a density of 1.294 g mL^(-1) . The battery holds 3.5 L of the acid. During the discharge of the battery, the density H_(2)SO_(4) falls from 1.294 g mL^(-1) to 1.139 g mL^(-1) which is 20% H_(2)SO_(4) by mass Q. Molarity of the solution after the discharge is

    A
    8.136
    B
    4.068
    C
    2.32
    D
    1.16

  • A lead storage battery consists of a lead anode and a grid of lead packed with lead dioxide as the cathode. The electrolyte taken is 39% H_(2)SO_(4) by mass having a density of 1.294 g mL^(-1) . The battery holds 3.5 L of the acid. During the discharge of the battery, the density H_(2)SO_(4) falls from 1.294 g mL^(-1) to 1.139 g mL^(-1) which is 20% H_(2)SO_(4) by mass Q. Moles of sulphuric acid lost during discharge is

    A
    9.88
    B
    8.88
    C
    2.32
    D
    1.16