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Read the given passage and answer the qu...

Read the given passage and answer the questions number that follow :
Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol `Lambda_(m)` The variation in Am with concentration is different for strong and weak electrolytes.
Is the variation in `Lambda_(m)` with concentration same or different for weak and strong electrolytes ?

Text Solution

Verified by Experts

It is different.
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Explore conceptually related problems

Read the given passage and answer the questions number that follow : Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol Lambda_(m) The variation in Am with concentration is different for strong and weak electrolytes. Why is meant by limiting molar conductivity ?

Molar conductivity decreases with decrease in concentration

Knowledge Check

  • Molar conductane of KCl increases slowly with decrease in concentration because of

    A
    increase in degree of ionisation
    B
    increase in total number of current carrying species
    C
    weakning of interionic attractions and increase in ionic mobilities
    D
    increase in hydration of ions.

  • Assertion:Molar conductivity increases with decrease in concentration. Reason:Conductivity always decrease with decrease in concentration.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion .
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion .
    C
    If assertion is true but reason is false .
    D
    If both assertion and reason are false .

  • Which of the following decrease with increase in concentration?

    A
    conductance
    B
    specifci conductance
    C
    Molar conductance
    D
    Conductivity

    • Similar Questions

    Explore conceptually related problems

    Read the given passage and answer the questions number that follow : Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol Am The variation in Lambda_(m) with concentration is different for strong and weak electrolytes. Define Lambda_(m) at a given concentration.

    Read the given passage and answer the questions number that follow : Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol Lambda_(m) The variation in Am with concentration is different for strong and weak electrolytes. How is limiting molar conductivity represented ?

    Read the given passage and answer the questions number that follow : Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol Am The variation in Lambda_(m) with concentration is different for strong and weak electrolytes. Why does molar conductivity increase with decrease in concentration ?

    How does the molar conductivity of KCl solution vary with increasing concentration ?

    The conductivity of an electrolytic solution decreases on dilution due to

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