Home
Class 12
CHEMISTRY
A lead storage battery is the most impor...

A lead storage battery is the most important 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)`) The battery holds 35L of the acid. During the discharge of the battery, the density of `H_(2)SO_(4)` falls to 1.138 g `mL^(-1)`. (20%`H_(2)SO)_(4)` by mass)
What is the molarity of sulphuric acid before discharge ?

Text Solution

Verified by Experts

Molarity `=(38xx1.294)/(98)xx(1000)/(100)=5.02M`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SAMPLE QUESTIONS PAPER

    U-LIKE SERIES|Exercise SECTION A (Questions number one word answers)|5 Videos

  • SAMPLE QUESTIONS PAPER

    U-LIKE SERIES|Exercise SECTION A (multiple choice questions)|5 Videos

  • POLYMERS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST ( SECTION -A (ASSERTION AND REASON))|2 Videos

  • SOLID STATE

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST|8 Videos

Similar Questions

Explore conceptually related problems

A lead storage battery is the most important 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) ) The battery holds 35L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.138 g mL^(-1) . (20% H_(2)SO)_(4) by mass) write the product of electrolysis wheni dilute sulphuric acid is electrolysed using platinu electrodes .

A lead storage battery is the most important 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) ) The battery holds 35L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.138 g mL^(-1) . (20% H_(2)SO)_(4) by mass) Wrtie the reaction taking place at the cathide when the battery is in use.

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. Moles of sulphuric acid lost during discharge is

    A
    9.88
    B
    8.88
    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. 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. 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^(-)`

    • Similar Questions

    Explore conceptually related problems

    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 lead storage battery is the most important 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) ) The battery holds 35L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.138 g mL^(-1) . (20% H_(2)SO)_(4) by mass) Lead storage battery is considered a secondary cell. Why ? Write the product battery is considered a secondary cell. Why?

    A lead storage battery is the most important 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) ) The battery holds 35L of the acid. During the discharge of the battery, the density of H_(2)SO_(4) falls to 1.138 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) ?

    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.

    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) ?

    Home
    Profile